1 00:00:06,100 --> 00:00:07,800 [Jonathan Caspell] This is a well-known doctor 2 00:00:07,867 --> 00:00:09,567 that is beloved by the community, 3 00:00:09,567 --> 00:00:11,166 by his friends. 4 00:00:11,266 --> 00:00:12,367 [Gabriel Monte] This was shocking. 5 00:00:12,467 --> 00:00:15,100 This is a straight-up, cold-blooded murder. 6 00:00:17,166 --> 00:00:20,000 She had been pressuring him to marry her, 7 00:00:20,100 --> 00:00:22,567 and he didn't want to have anything to do with that. 8 00:00:22,667 --> 00:00:24,767 He started receiving nasty text messages. 9 00:00:26,100 --> 00:00:28,700 He tells us that she has an ex-boyfriend, 10 00:00:28,767 --> 00:00:30,000 and he was extremely jealous. 11 00:00:30,000 --> 00:00:31,000 and he was extremely jealous. 12 00:00:31,567 --> 00:00:32,767 [Monte] He wanted revenge. 13 00:00:34,467 --> 00:00:36,767 [Caspell] Is this real? 14 00:00:36,767 --> 00:00:39,000 [Matt Powell] Every time the detectives went back and talked to her, 15 00:00:39,066 --> 00:00:40,166 she had a different name. 16 00:00:40,667 --> 00:00:41,800 Who is it? 17 00:00:42,900 --> 00:00:44,000 Why was he targeted? 18 00:00:44,767 --> 00:00:47,600 This was a gigantic whodunnit. 19 00:00:50,367 --> 00:00:52,100 [narrator] Every day in North America, 20 00:00:52,166 --> 00:00:54,500 dozens of people are murdered. 21 00:00:54,567 --> 00:00:57,400 {\an8}The key to solving the toughest of these homicides 22 00:00:57,467 --> 00:01:00,000 {\an8}lies in the final 24 hours of the victim's life. 23 00:01:00,000 --> 00:01:00,567 {\an8}lies in the final 24 hours of the victim's life. 24 00:01:01,367 --> 00:01:03,066 {\an8}To crack the case, 25 00:01:03,066 --> 00:01:06,700 {\an8}detectives must reconstruct that critical timeline, 26 00:01:06,767 --> 00:01:09,567 {\an8}the minutes and hours containing evidence 27 00:01:09,667 --> 00:01:11,300 {\an8}that can help unlock the mystery 28 00:01:11,367 --> 00:01:12,867 {\an8}and catch the killer. 29 00:01:25,266 --> 00:01:27,300 {\an8}Lubbock, Texas is a vibrant community, 30 00:01:27,367 --> 00:01:29,400 {\an8}uh, home to Texas Tech University, 31 00:01:29,467 --> 00:01:30,000 and a very lively music scene, 32 00:01:30,000 --> 00:01:31,000 and a very lively music scene, 33 00:01:31,266 --> 00:01:33,066 where people from all over come 34 00:01:33,066 --> 00:01:35,200 and just kind of experience Lubbock. 35 00:01:36,467 --> 00:01:38,266 {\an8}It's driven by its people, 36 00:01:38,266 --> 00:01:40,266 {\an8}uh, its tremendous people 37 00:01:40,266 --> 00:01:43,567 {\an8}that will do anything for you, uh, at any time. 38 00:01:43,667 --> 00:01:46,767 And so, it's rare to have a violent crime. 39 00:01:51,367 --> 00:01:53,367 That would all change in July of 2012, 40 00:01:53,467 --> 00:01:55,600 when one of the more affluent parts of the city 41 00:01:55,667 --> 00:01:59,266 becomes the backdrop of a very violent, shocking crime. 42 00:01:59,367 --> 00:02:00,000 {\an8}[phone ringing] 43 00:02:00,000 --> 00:02:00,667 {\an8}[phone ringing] 44 00:02:12,266 --> 00:02:14,567 [narrator] The caller is a coworker of the victim. 45 00:02:15,266 --> 00:02:17,300 When he hadn't shown up for work, 46 00:02:17,367 --> 00:02:18,867 she got concerned 47 00:02:18,867 --> 00:02:21,100 and she went over to the house. 48 00:02:21,166 --> 00:02:23,867 [Monte] She finds blood on the floor of the house, 49 00:02:23,867 --> 00:02:26,300 and she follows that blood trail to the garage, 50 00:02:26,367 --> 00:02:27,467 where she finds a body. 51 00:02:35,667 --> 00:02:38,266 The victim in the case is Dr. Joseph Sonnier. 52 00:02:41,066 --> 00:02:42,700 [Monte] Dr. Sonnier lived on his own. 53 00:02:43,500 --> 00:02:45,166 Uh, he was 57 years old 54 00:02:45,166 --> 00:02:48,100 and the chief pathologist for Covenant Medical Center. 55 00:02:48,166 --> 00:02:50,467 {\an8}He is, uh, very well known in the medical community, 56 00:02:50,567 --> 00:02:52,367 and is beloved by his friends. 57 00:02:52,467 --> 00:02:54,767 [narrator] Police respond to Dr. Sonnier's home. 58 00:02:55,867 --> 00:02:57,600 [Powell] Zach Johnson is assigned the case. 59 00:02:57,667 --> 00:02:59,367 He's a 15-year veteran 60 00:02:59,367 --> 00:03:00,000 of the Lubbock Police Department. 61 00:03:00,000 --> 00:03:01,000 of the Lubbock Police Department. 62 00:03:01,567 --> 00:03:03,266 It's a normal working day for me, 63 00:03:03,367 --> 00:03:05,166 and I'm on homicide call. 64 00:03:05,266 --> 00:03:09,600 {\an8}So, when control realizes that there is, in fact, a suspicious death, 65 00:03:09,667 --> 00:03:11,567 we travel out to the scene. 66 00:03:11,567 --> 00:03:13,100 A murder like this is unheard of, 67 00:03:13,166 --> 00:03:14,967 and especially in this neighborhood. 68 00:03:14,967 --> 00:03:16,166 I mean, this was shocking. 69 00:03:18,667 --> 00:03:19,934 [Zach Johnson] At the scene, 70 00:03:19,934 --> 00:03:25,166 Dr. Sonnier is laying face down on the garage floor. 71 00:03:25,266 --> 00:03:27,700 There is blood surrounding his body. 72 00:03:27,767 --> 00:03:29,767 There are several gunshot wounds 73 00:03:29,767 --> 00:03:30,000 and stab wounds to his body, 74 00:03:30,000 --> 00:03:31,000 and stab wounds to his body, 75 00:03:31,567 --> 00:03:33,567 and there is copious amounts of blood 76 00:03:33,667 --> 00:03:37,066 which is now congealed on the floor of the garage. 77 00:03:38,300 --> 00:03:40,500 [narrator] Investigators move inside the home 78 00:03:40,567 --> 00:03:43,266 to begin processing this scene. 79 00:03:43,266 --> 00:03:46,266 [Johnson] In the living room, we see eyeglasses on the floor. 80 00:03:46,266 --> 00:03:50,667 There's a big bay window that is pushed in. 81 00:03:50,767 --> 00:03:52,767 There's a chair that's been overturned. 82 00:03:53,767 --> 00:03:56,467 There's a whiskey tumbler overturned, 83 00:03:56,467 --> 00:03:58,100 and we find shell casings 84 00:03:58,166 --> 00:04:00,000 on the floor of the living room. 85 00:04:00,000 --> 00:04:00,100 on the floor of the living room. 86 00:04:01,300 --> 00:04:04,266 There is multiple blood drops 87 00:04:04,266 --> 00:04:07,567 that lead from the living room area directly into the garage. 88 00:04:08,467 --> 00:04:11,667 And one thing we see in the living room 89 00:04:11,767 --> 00:04:13,767 was a plastic bottle 90 00:04:13,867 --> 00:04:16,967 that had had the end of it either cut out 91 00:04:16,967 --> 00:04:19,100 or torn out, or something of that nature. 92 00:04:20,567 --> 00:04:23,400 Uh, the plastic bottle raised some interest. 93 00:04:23,467 --> 00:04:26,900 Uh, it appeared to have some type of gunshot residue 94 00:04:27,000 --> 00:04:28,467 on one end of it. 95 00:04:28,567 --> 00:04:30,000 What I immediately thought of was, 96 00:04:30,000 --> 00:04:30,667 What I immediately thought of was, 97 00:04:30,767 --> 00:04:31,000 "This is a cheap man's silencer." 98 00:04:33,767 --> 00:04:36,367 Somebody did not want anybody to know 99 00:04:36,367 --> 00:04:38,266 that they had fired shots. 100 00:04:38,266 --> 00:04:41,100 So, the question is, "What happened?" 101 00:04:41,166 --> 00:04:43,400 The thing that immediately stands out to me 102 00:04:43,467 --> 00:04:46,166 is that big bay window that's been pushed in, 103 00:04:46,166 --> 00:04:48,266 and there is a footprint in the garden 104 00:04:48,367 --> 00:04:50,000 outside of the home. 105 00:04:50,066 --> 00:04:51,767 [narrator] Investigators posit a theory 106 00:04:51,867 --> 00:04:53,367 of what likely transpired. 107 00:04:56,066 --> 00:04:58,667 [Johnson] Somebody entered through that big window. 108 00:05:00,900 --> 00:05:01,000 [Powell] Dr. Sonnier drops his drinking glass. 109 00:05:04,900 --> 00:05:06,967 [Johnson] They fired several shots. 110 00:05:08,767 --> 00:05:10,867 [Powell] And then, probably knocks over the chair 111 00:05:10,967 --> 00:05:12,500 trying to get out of the situation. 112 00:05:12,567 --> 00:05:13,900 Tried to run to safety, 113 00:05:14,000 --> 00:05:16,400 in the meantime, drops his eyeglasses. 114 00:05:16,467 --> 00:05:20,000 Well, I think it was Dr. Sonnier trying to escape. 115 00:05:20,100 --> 00:05:24,667 [Johnson] The trail of blood that is leading from that area to the garage 116 00:05:24,667 --> 00:05:27,000 would tell me, as an investigator, 117 00:05:27,066 --> 00:05:29,367 "He's trying to get out of the house. 118 00:05:29,367 --> 00:05:30,000 He's trying to get away from this shooter, 119 00:05:30,000 --> 00:05:31,000 He's trying to get away from this shooter, 120 00:05:31,266 --> 00:05:34,667 and he collapses inside the garage." 121 00:05:36,967 --> 00:05:39,200 [narrator] Since Dr. Sonnier was still alive, 122 00:05:39,266 --> 00:05:42,800 investigators surmise the killer followed him to the garage 123 00:05:42,867 --> 00:05:44,400 and stabbed him to death. 124 00:05:47,000 --> 00:05:50,000 What the medical examiner learned through the autopsy 125 00:05:50,100 --> 00:05:54,066 was that Dr. Sonnier had been shot five separate times 126 00:05:54,066 --> 00:05:57,100 and that he had been stabbed, uh, 11 times. 127 00:05:59,967 --> 00:06:00,000 {\an8}[narrator] To solve the crime, police need to piece together 128 00:06:00,000 --> 00:06:01,000 {\an8}[narrator] To solve the crime, police need to piece together 129 00:06:02,867 --> 00:06:06,166 {\an8}the last 24 hours of Joseph Sonnier's life. 130 00:06:10,667 --> 00:06:14,667 [Powell] Dr. Sonnier worked for Covenant Medical Center here in Lubbock. 131 00:06:14,667 --> 00:06:18,900 So we start talking to coworkers. 132 00:06:19,000 --> 00:06:21,700 [Monte] And they find out that Dr. Joseph Sonnier 133 00:06:21,767 --> 00:06:24,867 {\an8}arrives at Covenant Medical Center at 10:00 a.m. 134 00:06:24,967 --> 00:06:28,700 {\an8}[Powell] And he worked till about 7:00 at night. 135 00:06:28,767 --> 00:06:30,000 {\an8}And we also know from his, uh, from his security at home 136 00:06:30,000 --> 00:06:31,000 {\an8}And we also know from his, uh, from his security at home 137 00:06:32,667 --> 00:06:35,967 {\an8}that he arrived approximately 7:15 p.m. 138 00:06:35,967 --> 00:06:39,667 {\an8}[Johnson] Dr. Sonnier pours himself a drink in the living room... 139 00:06:40,800 --> 00:06:41,967 {\an8}...and gets murdered. 140 00:06:43,667 --> 00:06:46,100 {\an8}[narrator] And the next day, on July 11th, 141 00:06:46,166 --> 00:06:49,800 {\an8}his bloody body is discovered just before 2:00 p.m. 142 00:06:55,000 --> 00:06:57,800 {\an8}[Caspell] The medical examiner establishes the time of death 143 00:06:57,867 --> 00:07:00,000 {\an8}to be, uh, sometime the evening before, 144 00:07:00,000 --> 00:07:01,000 {\an8}to be, uh, sometime the evening before, 145 00:07:01,767 --> 00:07:04,367 {\an8}7:15 p.m. to around 10:00 p.m. 146 00:07:07,900 --> 00:07:09,600 [narrator] Police now have to determine 147 00:07:09,667 --> 00:07:12,367 who is responsible and why they did it. 148 00:07:13,266 --> 00:07:16,667 Dr. Sonnier's, uh, murder was a mystery. 149 00:07:16,667 --> 00:07:18,000 It was a big whodunnit. 150 00:07:18,100 --> 00:07:20,000 He was well-loved, well-liked. 151 00:07:20,066 --> 00:07:23,500 So, you know, the news of his killing 152 00:07:23,567 --> 00:07:25,967 was just shocking to a lot of people. 153 00:07:25,967 --> 00:07:28,000 [Johnson] People in the neighborhood are pretty scared. 154 00:07:28,100 --> 00:07:30,000 The last person they thought they would see murdered is Dr. Sonnier. 155 00:07:30,000 --> 00:07:31,000 The last person they thought they would see murdered is Dr. Sonnier. 156 00:07:32,567 --> 00:07:34,600 [narrator] Investigators ponder the motive. 157 00:07:36,266 --> 00:07:38,300 [Powell] My first instinct, "It's a robbery. 158 00:07:38,367 --> 00:07:40,467 It's a burglary. It's a burglary gone bad." 159 00:07:40,467 --> 00:07:42,467 Uh, that's my first instinct. 160 00:07:43,500 --> 00:07:45,767 [narrator] But when police look around the house, 161 00:07:45,867 --> 00:07:47,767 they find nothing of value missing. 162 00:07:49,900 --> 00:07:52,000 [Johnson] There's nothing disturbed in the house 163 00:07:52,100 --> 00:07:54,100 other than our immediate crime scene. 164 00:07:54,166 --> 00:07:56,166 The only thing that was stolen in that house 165 00:07:56,266 --> 00:07:57,667 was Dr. Sonnier's life. 166 00:07:57,767 --> 00:07:59,700 This is not a burglar gone wrong. 167 00:07:59,767 --> 00:08:00,000 This is a straight-up, cold-blooded murder. 168 00:08:00,000 --> 00:08:01,000 This is a straight-up, cold-blooded murder. 169 00:08:03,266 --> 00:08:06,667 They wanted to be sure that Dr. Sonnier was killed. 170 00:08:08,667 --> 00:08:11,166 [narrator] Police suspect the type of firearm used 171 00:08:11,266 --> 00:08:13,367 may be a clue to the killer's identity. 172 00:08:14,667 --> 00:08:16,100 We determine 173 00:08:16,166 --> 00:08:20,066 that the casings came from a .25 caliber handgun. 174 00:08:20,066 --> 00:08:23,767 Why are we using a very small caliber handgun 175 00:08:23,867 --> 00:08:25,367 to commit a murder? 176 00:08:25,367 --> 00:08:27,867 There's a whole bunch of larger caliber handguns 177 00:08:27,967 --> 00:08:30,000 that will do the job with less ammunition. 178 00:08:30,000 --> 00:08:30,800 that will do the job with less ammunition. 179 00:08:32,000 --> 00:08:34,567 {\an8}[Michael Arntfield] A .25 caliber handgun 180 00:08:34,567 --> 00:08:36,266 {\an8}would be appealing to an offender 181 00:08:36,367 --> 00:08:38,000 {\an8}because they're easily concealed, 182 00:08:38,100 --> 00:08:39,667 {\an8}they're not particularly loud, 183 00:08:39,767 --> 00:08:41,767 {\an8}uh, and the recoil is minimal, 184 00:08:41,867 --> 00:08:44,500 and they can control the weapon, uh, comparatively well. 185 00:08:44,567 --> 00:08:48,100 [Johnson] And so, I have to consider a female perpetrator. 186 00:08:48,166 --> 00:08:50,567 She can secret this gun inside a purse 187 00:08:50,567 --> 00:08:54,000 and use it with a huge, uh, amount of surprise. 188 00:08:55,667 --> 00:08:57,500 [narrator] But whether male or female, 189 00:08:57,567 --> 00:09:00,000 who would want to kill Dr. Sonnier? 190 00:09:00,000 --> 00:09:00,166 who would want to kill Dr. Sonnier? 191 00:09:00,266 --> 00:09:01,000 Investigators look into his family life, 192 00:09:02,767 --> 00:09:04,166 which wasn't idyllic. 193 00:09:05,266 --> 00:09:08,400 Dr. Sonnier was married for 26 years, 194 00:09:08,467 --> 00:09:10,667 and the marriage ended in divorce. 195 00:09:10,767 --> 00:09:13,166 [narrator] But that marriage also produced two sons, 196 00:09:13,266 --> 00:09:14,700 who are now in their 20s. 197 00:09:15,467 --> 00:09:17,467 When we talked to the sons, 198 00:09:17,467 --> 00:09:19,266 they're beside themselves. 199 00:09:19,266 --> 00:09:20,266 They're shocked. 200 00:09:20,266 --> 00:09:21,767 They're in a state of disbelief. 201 00:09:21,767 --> 00:09:24,767 They have no idea what has happened. 202 00:09:24,767 --> 00:09:28,500 What made this tragedy, um, doubly, uh, bad 203 00:09:28,567 --> 00:09:30,000 was that the sons of Dr. Sonnier 204 00:09:30,000 --> 00:09:31,000 was that the sons of Dr. Sonnier 205 00:09:31,166 --> 00:09:33,767 had lost their mom, uh, to a homicide, 206 00:09:33,867 --> 00:09:36,667 almost two years to the day that they lost their dad. 207 00:09:37,867 --> 00:09:40,100 Just something that you just never hear 208 00:09:40,166 --> 00:09:41,767 and just never expect. 209 00:09:42,567 --> 00:09:43,767 [narrator] Police wonder, 210 00:09:43,767 --> 00:09:46,800 "Could their parents' murders be connected?" 211 00:09:46,867 --> 00:09:49,166 [Powell] Certainly, that's something that you think. 212 00:09:49,166 --> 00:09:51,967 Are the two murders linked in any form or fashion? 213 00:09:52,867 --> 00:09:55,100 [Johnson] It's a very unique situation. 214 00:09:55,166 --> 00:09:56,467 We've got two homicides 215 00:09:56,567 --> 00:09:58,400 that occurred very close to each other 216 00:09:58,467 --> 00:09:59,500 in the same family. 217 00:10:05,600 --> 00:10:07,467 [narrator] Lubbock, Texas police suspect 218 00:10:07,567 --> 00:10:10,367 there may be a connection between Dr. Sonnier's murder 219 00:10:10,467 --> 00:10:13,467 and the slaying of his ex-wife two years earlier. 220 00:10:15,100 --> 00:10:17,700 {\an8}When it's learned that Dr. Sonnier's ex-wife 221 00:10:17,767 --> 00:10:20,000 {\an8}had been murdered in the past few years, 222 00:10:20,066 --> 00:10:21,667 {\an8}this clearly raises questions. 223 00:10:21,667 --> 00:10:23,667 {\an8}Is the same perpetrator involved? 224 00:10:23,767 --> 00:10:27,066 {\an8}Is there a link here between these two cases? 225 00:10:27,066 --> 00:10:30,166 {\an8}[Powell] So, when detectives started looking at the relationship 226 00:10:30,266 --> 00:10:32,800 {\an8}and the murder of Dr. Sonnier's ex-wife, 227 00:10:32,867 --> 00:10:32,935 {\an8}uh, they quickly learned that she had remarried 228 00:10:32,935 --> 00:10:33,000 {\an8}uh, they quickly learned that she had remarried 229 00:10:35,667 --> 00:10:38,867 {\an8}after divorcing, uh, Dr. Sonnier. 230 00:10:38,867 --> 00:10:43,700 {\an8}And her husband, at the time, shot her and actually took his own life. 231 00:10:43,767 --> 00:10:45,367 {\an8}[Johnson] It was a murder-suicide, 232 00:10:45,367 --> 00:10:49,500 {\an8}and so it was restricted to that particular relationship. 233 00:10:49,567 --> 00:10:50,567 So that theory, 234 00:10:50,600 --> 00:10:53,000 as far as those two cases maybe being linked, 235 00:10:53,100 --> 00:10:54,667 was quickly dismissed. 236 00:10:55,867 --> 00:10:58,100 [Johnson] So, why is our victim a victim? 237 00:10:58,166 --> 00:11:00,867 Why did they end up dead? 238 00:11:00,967 --> 00:11:02,935 [Powell] We're gonna delve very quickly into his personal life, 239 00:11:02,935 --> 00:11:03,000 [Powell] We're gonna delve very quickly into his personal life, 240 00:11:04,467 --> 00:11:06,867 uh, to determine whether anybody has a motive 241 00:11:06,967 --> 00:11:09,300 to harm Dr. Sonnier. 242 00:11:09,367 --> 00:11:11,900 [narrator] His sons reveal that before he was murdered, 243 00:11:12,000 --> 00:11:15,467 Dr. Sonnier was enjoying being single again. 244 00:11:15,467 --> 00:11:17,567 [Monte] After Dr. Sonnier got divorced, 245 00:11:17,567 --> 00:11:19,467 he started dating women, 246 00:11:19,567 --> 00:11:21,467 {\an8}and at the time that he was killed, 247 00:11:21,467 --> 00:11:22,467 {\an8}he was dating a woman 248 00:11:22,467 --> 00:11:25,100 {\an8}by the name of Richelle Shetina. 249 00:11:25,166 --> 00:11:28,467 [narrator] Lead investigator Zach Johnson reaches out to Richelle, 250 00:11:28,567 --> 00:11:31,000 who agrees to an interview at police headquarters. 251 00:11:36,700 --> 00:11:40,166 {\an8}[Powell] She's a divorcee and has four teenage sons. 252 00:11:41,266 --> 00:11:43,600 Richelle Shetina and Dr. Joseph Sonnier met 253 00:11:43,667 --> 00:11:45,767 at a local ballroom dancing studio 254 00:11:45,867 --> 00:11:47,100 and hit it off. 255 00:11:47,166 --> 00:11:49,367 [Johnson] So, they'd been dating about 10 months, 256 00:11:49,467 --> 00:11:51,567 and as a 50th birthday present, 257 00:11:51,667 --> 00:11:55,467 he says, "Hey, let's go off to Paris and celebrate your 50th." 258 00:11:55,567 --> 00:11:57,400 And so, they had just come back from there. 259 00:12:04,567 --> 00:12:08,800 Dr. Sonnier was the focus of Richelle's world. 260 00:12:09,567 --> 00:12:10,867 [sobs] 261 00:12:10,900 --> 00:12:15,100 Everything on social media is Dr. Sonnier and Richelle, 262 00:12:15,166 --> 00:12:16,800 pictures and pictures and pictures 263 00:12:16,867 --> 00:12:18,667 of their life together, 264 00:12:18,767 --> 00:12:21,867 of their time in Paris and just being together. 265 00:12:21,867 --> 00:12:24,767 So, when the detectives were questioning Richelle, 266 00:12:24,867 --> 00:12:28,500 she was able to very quickly, to give, uh, her whereabouts, 267 00:12:28,567 --> 00:12:31,867 to give a very detailed, uh, description of where she was 268 00:12:31,867 --> 00:12:32,935 during the times of, uh, that were important to the detectives. 269 00:12:32,935 --> 00:12:33,000 during the times of, uh, that were important to the detectives. 270 00:12:36,500 --> 00:12:37,767 {\an8}[Caspell] The day the murder happens, 271 00:12:37,867 --> 00:12:40,767 {\an8}Dr. Sonnier meets Richelle for lunch at 1:00 p.m. 272 00:12:40,867 --> 00:12:42,800 {\an8}and then returns to work. 273 00:12:42,867 --> 00:12:45,667 {\an8}[Johnson] After lunch, they went their separate ways, 274 00:12:45,767 --> 00:12:48,066 {\an8}and we know that Dr. Sonnier left 275 00:12:48,066 --> 00:12:49,567 {\an8}Covenant Medical Center 276 00:12:49,567 --> 00:12:52,767 {\an8}at around 7:00 in the evening. 277 00:12:52,867 --> 00:12:54,000 {\an8}[Powell] The Covenant Medical Center, 278 00:12:54,000 --> 00:12:57,100 {\an8}it was about a 4-minute drive from his home. 279 00:12:57,166 --> 00:12:59,500 {\an8}We know he got home around 7:15. 280 00:13:11,467 --> 00:13:12,667 [cell phone chimes] 281 00:13:12,767 --> 00:13:14,467 [Johnson] Richelle texts Dr. Sonnier 282 00:13:14,467 --> 00:13:16,867 at approximately 10:32 p.m. 283 00:13:16,867 --> 00:13:18,600 and doesn't get a reply from him. 284 00:13:18,667 --> 00:13:22,567 So we kind of have the very beginnings 285 00:13:22,667 --> 00:13:24,500 of a framework of time 286 00:13:24,567 --> 00:13:26,500 where this murder occurred. 287 00:13:26,567 --> 00:13:30,467 [narrator] Richelle's account confirms what medical examiners suspected. 288 00:13:30,467 --> 00:13:32,935 {\an8}Dr. Sonnier was likely killed on July 10th 289 00:13:32,935 --> 00:13:33,000 {\an8}Dr. Sonnier was likely killed on July 10th 290 00:13:33,467 --> 00:13:36,800 {\an8}between 7:15 and 10:30 p.m. 291 00:13:38,100 --> 00:13:40,867 {\an8}We push on with Richelle and with the interview, 292 00:13:40,867 --> 00:13:42,166 and I just ask her... 293 00:13:51,367 --> 00:13:54,166 And she brings up an ex-girlfriend, 294 00:13:54,266 --> 00:13:57,000 uh, of Dr. Sonnier's. 295 00:13:57,100 --> 00:13:57,967 Her name is Sharon, 296 00:13:57,967 --> 00:14:00,100 and she's an emergency room nurse. 297 00:14:00,166 --> 00:14:02,300 Dr. Sonnier had ended the relationship, 298 00:14:02,367 --> 00:14:02,935 and that relationship didn't end well. 299 00:14:02,935 --> 00:14:03,000 and that relationship didn't end well. 300 00:14:08,667 --> 00:14:09,800 According to Richelle, 301 00:14:09,867 --> 00:14:13,400 Sharon and Dr. Sonnier had dated a very short time, 302 00:14:13,467 --> 00:14:16,600 and when Dr. Sonnier ended that relationship, 303 00:14:16,667 --> 00:14:19,800 Sharon was very angry. 304 00:14:19,867 --> 00:14:23,166 [narrator] Is it possible that Dr. Sonnier's ex-girlfriend Sharon 305 00:14:23,266 --> 00:14:25,100 was enraged enough to kill him? 306 00:14:29,667 --> 00:14:32,935 Police want to look closely at ex-partners, ex-lovers, 307 00:14:32,935 --> 00:14:33,000 Police want to look closely at ex-partners, ex-lovers, 308 00:14:33,467 --> 00:14:36,200 because jilted lover may seek vengeance, 309 00:14:37,000 --> 00:14:39,066 and that can lead to violence. 310 00:14:40,867 --> 00:14:44,100 [Johnson] I'm thinking, "We have a crime of passion." 311 00:14:44,166 --> 00:14:46,767 This is a very cruel and brutal murder. 312 00:14:48,667 --> 00:14:52,367 This person wanted to know that Dr. Sonnier was dead. 313 00:14:53,467 --> 00:14:54,767 {\an8}[Caspell] This is not random, 314 00:14:54,767 --> 00:14:57,667 {\an8}with this level of violence to it. 315 00:14:57,667 --> 00:15:00,567 It is very important to investigators, 316 00:15:00,567 --> 00:15:02,935 because it helps us to determine 317 00:15:02,935 --> 00:15:03,000 because it helps us to determine 318 00:15:03,867 --> 00:15:06,500 the mindset of the killer 319 00:15:06,567 --> 00:15:09,100 at the time of this murder. 320 00:15:09,166 --> 00:15:12,100 [narrator] And investigators learn that Sharon had a hard time 321 00:15:12,166 --> 00:15:13,567 taking no for an answer. 322 00:15:14,600 --> 00:15:16,567 And during her relationship with Dr. Sonnier, 323 00:15:16,567 --> 00:15:18,500 Sharon wanted to make it exclusive. 324 00:15:18,567 --> 00:15:20,166 Dr. Sonnier didn't. 325 00:15:20,266 --> 00:15:23,000 [Johnson] We discover that Sharon, 326 00:15:23,066 --> 00:15:25,066 she's pressuring and pressuring him, 327 00:15:25,066 --> 00:15:29,667 and he was like, "I don't want an exclusive relationship. 328 00:15:29,667 --> 00:15:31,567 I want to end the relationship." 329 00:15:40,567 --> 00:15:42,567 [Powell] Sharon got very spiteful 330 00:15:42,567 --> 00:15:46,066 and sent some very vindictive, hateful text messages 331 00:15:46,066 --> 00:15:47,266 to Dr. Sonnier. 332 00:15:48,200 --> 00:15:50,367 {\an8}You know, calling him a [bleep] , 333 00:15:50,467 --> 00:15:53,200 {\an8}and, you know, "You're such a [bleep] " 334 00:15:53,266 --> 00:15:54,800 [Johnson] She was not happy at all. 335 00:15:54,867 --> 00:15:55,767 {\an8}You know... 336 00:15:55,867 --> 00:15:57,567 {\an8}[Johnson reading] 337 00:15:59,467 --> 00:16:02,935 Nasty text messages to Dr. Sonnier is alarming, 338 00:16:02,935 --> 00:16:03,000 Nasty text messages to Dr. Sonnier is alarming, 339 00:16:04,867 --> 00:16:08,867 because it shows that there is unfinished business there. 340 00:16:12,166 --> 00:16:14,767 [Johnson] But is that a reason enough to kill? 341 00:16:14,867 --> 00:16:16,000 That's our question. 342 00:16:21,567 --> 00:16:23,266 [narrator] Lubbock, Texas police catch up 343 00:16:23,266 --> 00:16:26,500 with Dr. Sonnier's ex-girlfriend Sharon, a nurse, 344 00:16:26,567 --> 00:16:29,567 to find out if she had anything to do with his murder. 345 00:16:29,667 --> 00:16:33,200 {\an8}Detectives learn that Sharon is in Austin 346 00:16:33,266 --> 00:16:35,867 {\an8}around the time of death of Dr. Sonnier. 347 00:16:35,867 --> 00:16:37,767 [narrator] Austin is a 6-hour drive 348 00:16:37,767 --> 00:16:39,667 from Dr. Sonnier's home in Lubbock. 349 00:16:40,567 --> 00:16:42,467 So she was eliminated as a suspect. 350 00:16:44,266 --> 00:16:46,200 [narrator] Back at Lubbock police headquarters, 351 00:16:46,266 --> 00:16:50,200 Dr. Sonnier's most recent girlfriend, Richelle Shetina, 352 00:16:50,266 --> 00:16:50,479 continues to cooperate with investigators. 353 00:16:50,479 --> 00:16:51,000 continues to cooperate with investigators. 354 00:16:53,166 --> 00:16:55,800 [Johnson] And I ask her, "Is there anybody else that you know of 355 00:16:55,867 --> 00:16:57,667 that would wanna harm Dr. Sonnier?" 356 00:16:58,867 --> 00:17:01,800 {\an8}She says, "Yes, uh, my ex-boyfriend." 357 00:17:10,600 --> 00:17:12,266 {\an8}[Powell] That was important information to us. 358 00:17:12,367 --> 00:17:13,767 She has an ex-boyfriend, 359 00:17:13,767 --> 00:17:15,400 uh, a guy named Mike Dixon 360 00:17:15,467 --> 00:17:16,900 who's a doctor in Amarillo. 361 00:17:17,000 --> 00:17:19,800 That's the first time detectives hear his name 362 00:17:19,867 --> 00:17:20,479 as a potential person who may have an interest 363 00:17:20,479 --> 00:17:21,000 as a potential person who may have an interest 364 00:17:22,767 --> 00:17:25,100 in seeing Dr. Sonnier out of the way. 365 00:17:29,467 --> 00:17:33,567 She tells us that Mike Dixon is not a very nice person, 366 00:17:33,667 --> 00:17:36,300 uh, very hateful, uh, very vindictive, 367 00:17:36,367 --> 00:17:38,100 very dishonest. 368 00:17:41,367 --> 00:17:43,400 {\an8}Dr. Dixon didn't take the breakup very well. 369 00:17:46,166 --> 00:17:47,600 [narrator] A year-and-a-half earlier, 370 00:17:47,667 --> 00:17:49,967 it had been love at first sight. 371 00:17:49,967 --> 00:17:50,479 Mike Dixon, uh, and her first met 372 00:17:50,479 --> 00:17:51,000 Mike Dixon, uh, and her first met 373 00:17:52,266 --> 00:17:54,166 when she had gone to his clinic 374 00:17:54,266 --> 00:17:55,867 for BOTOX injections. 375 00:17:55,867 --> 00:17:58,467 She started dating him at that time. 376 00:17:58,567 --> 00:18:00,700 [narrator] But Dr. Dixon was also married, 377 00:18:00,767 --> 00:18:03,100 and despite promising for 18 months 378 00:18:03,166 --> 00:18:04,166 to leave his wife, 379 00:18:04,166 --> 00:18:05,867 he never does. 380 00:18:05,967 --> 00:18:09,000 [Johnson] Richelle tells me, as this relationship goes on, 381 00:18:09,066 --> 00:18:10,867 he really doesn't invest in her, 382 00:18:10,867 --> 00:18:12,800 and she picks up on this pretty quickly, 383 00:18:12,867 --> 00:18:16,300 and she took a lot of offense to, from Dr. Dixon. 384 00:18:16,367 --> 00:18:18,166 And she finally said, "I'm done. 385 00:18:18,266 --> 00:18:20,467 I'm through with this relationship." 386 00:18:20,567 --> 00:18:21,000 [narrator] For Dr. Dixon, it goes from bad to worse. 387 00:18:23,767 --> 00:18:27,667 His wife discovers the affair and leaves him. 388 00:18:27,667 --> 00:18:29,800 [Monte] And then, Richelle Shetina did mention to investigators 389 00:18:29,867 --> 00:18:32,100 that at some point, Dr. Dixon finds out 390 00:18:32,166 --> 00:18:35,367 that she's dating another doctor in Lubbock. 391 00:18:35,467 --> 00:18:37,667 [Powell] Mike Dixon did not take that very well. 392 00:18:37,767 --> 00:18:41,200 He had even said that Richelle could continue to see Dr. Sonnier 393 00:18:41,266 --> 00:18:42,467 if she would see him, too. 394 00:18:52,900 --> 00:18:55,266 She is very much in love with Dr. Sonnier. 395 00:18:55,266 --> 00:18:58,767 Richelle tells Dr. Dixon, 396 00:18:58,767 --> 00:19:01,667 "I am not coming back to you, now or ever," 397 00:19:01,767 --> 00:19:04,867 and he is just livid. 398 00:19:05,967 --> 00:19:07,166 [narrator] Richelle also mentions 399 00:19:07,266 --> 00:19:09,367 that before Dr. Sonnier was murdered, 400 00:19:09,367 --> 00:19:12,467 she suspected she was being stalked. 401 00:19:12,467 --> 00:19:15,266 She remembers one morning at the gym very clearly. 402 00:19:38,166 --> 00:19:40,967 [Powell] Richelle also tells us that one time, 403 00:19:40,967 --> 00:19:43,567 uh, around the time of Dr. Sonnier's death, 404 00:19:43,567 --> 00:19:45,400 they were in Dr. Sonnier's house 405 00:19:45,467 --> 00:19:50,166 and they saw a flash from out on the back patio. 406 00:19:50,800 --> 00:19:51,000 [narrator] At the time, 407 00:19:52,233 --> 00:19:54,500 Richelle thought the camera flash may have been related 408 00:19:54,567 --> 00:19:57,066 to her suspected parking lot stalker. 409 00:19:57,066 --> 00:19:58,867 But now, she's not so sure. 410 00:20:00,467 --> 00:20:02,667 [Powell] She tells us that she couldn't help but wonder 411 00:20:02,767 --> 00:20:05,166 whether or not that situation with the flash 412 00:20:05,266 --> 00:20:07,667 related, somehow, to the death of Dr. Sonnier. 413 00:20:09,166 --> 00:20:12,266 [narrator] Was Dr. Dixon so obsessed with Richelle 414 00:20:12,266 --> 00:20:14,500 that he spied on her and Dr. Sonnier? 415 00:20:16,266 --> 00:20:20,367 {\an8}Obsessive jealousy is really when we are just so fixated 416 00:20:20,367 --> 00:20:20,479 {\an8}on a previous partner, 417 00:20:20,479 --> 00:20:21,000 {\an8}on a previous partner, 418 00:20:21,767 --> 00:20:23,166 it becomes all-consuming. 419 00:20:23,900 --> 00:20:25,567 That's also a high-risk time 420 00:20:25,567 --> 00:20:28,600 for a violent act or incident to occur. 421 00:20:28,667 --> 00:20:30,600 [narrator] Is it possible Dr. Michael Dixon 422 00:20:30,667 --> 00:20:33,266 killed Dr. Sonnier in a jealous rage? 423 00:20:34,667 --> 00:20:36,166 [echoing gunshot] 424 00:20:39,100 --> 00:20:42,767 To find out, Lubbock investigators drive two hours north 425 00:20:42,767 --> 00:20:46,100 to Dr. Dixon's home in Amarillo to ask him in person. 426 00:20:47,266 --> 00:20:48,667 [Johnson] So we go up to Amarillo 427 00:20:48,767 --> 00:20:50,479 and we talk to Dr. Dixon. 428 00:20:50,479 --> 00:20:50,767 and we talk to Dr. Dixon. 429 00:20:50,867 --> 00:20:51,000 And Dr. Dixon is very open about everything. 430 00:20:54,100 --> 00:20:58,166 [narrator] Dr. Dixon admits he was cheating on his wife with Richelle. 431 00:20:58,266 --> 00:21:02,667 [Johnson] He tells me that he was in love with Richelle, 432 00:21:02,667 --> 00:21:06,300 that he was very sad that the relationship was over, 433 00:21:06,367 --> 00:21:10,667 and that he had actually lost his marriage over that relationship 434 00:21:10,667 --> 00:21:13,100 uh, when his wife discovered it. 435 00:21:13,166 --> 00:21:16,367 He says the whole reason for the breakup with Richelle 436 00:21:16,367 --> 00:21:18,867 was because she was pressuring him to get married. 437 00:21:18,867 --> 00:21:20,467 She wasn't gonna mess with somebody 438 00:21:20,467 --> 00:21:20,479 that wasn't gonna, you know, commit to her. 439 00:21:20,479 --> 00:21:21,000 that wasn't gonna, you know, commit to her. 440 00:21:23,900 --> 00:21:26,667 [narrator] Investigators ask Dr. Dixon point blank. 441 00:21:26,667 --> 00:21:29,300 Did he murder Dr. Sonnier? 442 00:21:29,367 --> 00:21:32,567 [Powell] Dr. Dixon tells detectives that he had nothing to do 443 00:21:32,667 --> 00:21:35,266 with the murder that took place in Lubbock. 444 00:21:35,367 --> 00:21:36,667 [Johnson] He's moved on from Richelle. 445 00:21:36,667 --> 00:21:39,166 He's dating a medical student named Ashley. 446 00:21:40,700 --> 00:21:42,266 He allows us to photograph him, 447 00:21:42,367 --> 00:21:43,900 to check for defensive wounds, 448 00:21:44,000 --> 00:21:46,767 to check him for any evidence of physical altercation. 449 00:21:48,266 --> 00:21:50,479 Even provides us a DNA sample right there. 450 00:21:50,479 --> 00:21:51,000 Even provides us a DNA sample right there. 451 00:21:51,266 --> 00:21:54,500 So he is being more than cooperative. 452 00:21:56,967 --> 00:22:00,400 But inevitably, I ask him, "Can you account for your whereabouts?" 453 00:22:01,767 --> 00:22:05,567 And Dr. Dixon tells me, "I was attending surgery in the morning. 454 00:22:06,767 --> 00:22:10,500 I had lunch with Ashley and then I returned to work. 455 00:22:10,567 --> 00:22:14,667 And then, in the evening, we had sushi at one of our favorite restaurants 456 00:22:14,767 --> 00:22:16,367 and then, we came back to my place." 457 00:22:17,266 --> 00:22:19,300 So, we immediately checked with Ashley 458 00:22:19,367 --> 00:22:20,479 and we follow up on the alibi at the restaurant and it checks out. 459 00:22:20,479 --> 00:22:21,000 and we follow up on the alibi at the restaurant and it checks out. 460 00:22:23,266 --> 00:22:26,000 We were even able to prove it through a credit card receipt. 461 00:22:26,066 --> 00:22:29,200 So according to the timeline that we've corroborated 462 00:22:29,266 --> 00:22:32,066 {\an8}there was no way that Dr. Dixon was in Lubbock 463 00:22:32,066 --> 00:22:33,667 {\an8}to kill Dr. Sonnier. 464 00:22:36,266 --> 00:22:38,066 [narrator] With Dr. Dixon ruled out, 465 00:22:38,066 --> 00:22:40,667 investigators dig deeper into the victim's life 466 00:22:40,767 --> 00:22:43,800 for suspects they may have overlooked. 467 00:22:43,867 --> 00:22:47,667 Dr. Sonnier was very heartbroken after his divorce. 468 00:22:48,567 --> 00:22:50,479 So he took some time. 469 00:22:50,479 --> 00:22:50,967 So he took some time. 470 00:22:50,967 --> 00:22:51,000 He was able to get back into the dating game. 471 00:22:55,166 --> 00:22:57,700 [Monte] Inside the living room of his home, they come across a notebook, 472 00:22:57,767 --> 00:23:00,767 a little black book that Dr. Sonnier had 473 00:23:00,767 --> 00:23:03,400 that listed some of the women he dated 474 00:23:03,467 --> 00:23:06,367 and rated the women that he was dating. 475 00:23:06,467 --> 00:23:10,800 That's kind of how he enjoyed being a bachelor was he dated women 476 00:23:10,867 --> 00:23:14,200 and sort of had grades [chuckles] for them. 477 00:23:17,467 --> 00:23:20,467 [narrator] It's Dr. Joseph Sonnier's last girlfriend Richelle 478 00:23:20,567 --> 00:23:21,000 who now recalls someone else. 479 00:23:23,066 --> 00:23:25,900 A woman reached out to Richelle directly 480 00:23:26,000 --> 00:23:28,000 just months before Joseph was killed. 481 00:23:47,467 --> 00:23:50,479 [Powell] In that letter, it also accused Dr. Sonnier of actually having sex 482 00:23:50,479 --> 00:23:51,000 [Powell] In that letter, it also accused Dr. Sonnier of actually having sex 483 00:23:51,266 --> 00:23:53,800 but never paid her for the first encounter that they had. 484 00:23:55,266 --> 00:23:56,767 [Johnson] So here's another person 485 00:23:56,867 --> 00:23:59,100 that is very angry with Dr. Sonnier, 486 00:23:59,166 --> 00:24:02,900 but we have to ask ourselves, "Is this a motive for murder?" 487 00:24:09,700 --> 00:24:11,367 [narrator] Police in Lubbock, Texas, follow up 488 00:24:11,367 --> 00:24:14,300 on a poison pen letter from a woman named Tina. 489 00:24:15,667 --> 00:24:17,767 Tina wrote that she was an online hookup 490 00:24:17,867 --> 00:24:21,367 of murder victim Dr. Joseph Sonnier. 491 00:24:21,467 --> 00:24:23,667 [Johnson] In the letter, this lady does in fact say 492 00:24:23,767 --> 00:24:26,100 that Dr. Sonnier agreed to pay her for sex, 493 00:24:26,166 --> 00:24:29,867 {\an8}but she's very angry because Dr. Sonnier has not kept up 494 00:24:29,967 --> 00:24:31,367 {\an8}his end of the bargain. 495 00:24:31,467 --> 00:24:34,300 {\an8}[narrator] Tina was demanding that Dr. Sonnier pay up 496 00:24:34,367 --> 00:24:38,029 {\an8}and Dr. Sonnier's girlfriend at the time, Richelle, was furious about it. 497 00:24:38,029 --> 00:24:38,767 {\an8}and Dr. Sonnier's girlfriend at the time, Richelle, was furious about it. 498 00:24:40,500 --> 00:24:43,800 {\an8}Richelle confronts Dr. Sonnier about this letter 499 00:24:43,867 --> 00:24:48,266 {\an8}and Dr. Sonnier denies any knowledge of whoever this person is 500 00:24:48,367 --> 00:24:50,700 or having a sexual encounter for money. 501 00:24:50,767 --> 00:24:53,000 He said it was an extortion letter. 502 00:24:58,266 --> 00:24:59,900 [Johnson] If Richelle is correct 503 00:25:00,066 --> 00:25:02,066 and somebody is in fact out there 504 00:25:02,066 --> 00:25:06,767 trying to destroy this relationship, who is it? 505 00:25:06,867 --> 00:25:08,029 Where do we need to look? 506 00:25:08,029 --> 00:25:08,100 Where do we need to look? 507 00:25:08,166 --> 00:25:09,000 There was no last name associated with Tina. 508 00:25:10,667 --> 00:25:13,266 We knew that the letter was post marked in Lubbock, 509 00:25:13,367 --> 00:25:15,266 but there was no return address. 510 00:25:15,266 --> 00:25:16,967 We just didn't have a lot to go on. 511 00:25:18,100 --> 00:25:20,767 So we start with Dr. Sonnier's family and friends. 512 00:25:20,767 --> 00:25:23,467 "Hey, who is Tina? Have you ever heard of a Tina? 513 00:25:23,467 --> 00:25:27,266 A Christina? Anybody of that nature?" 514 00:25:27,266 --> 00:25:29,767 And they're like, "No, we've never heard of that person." 515 00:25:31,567 --> 00:25:33,066 [narrator] Investigators are stumped, 516 00:25:33,066 --> 00:25:34,967 but Richelle now tells police 517 00:25:34,967 --> 00:25:37,767 that Tina is probably a fake name 518 00:25:37,867 --> 00:25:38,029 and she claims to know who the real Tina may be. 519 00:25:38,029 --> 00:25:39,000 and she claims to know who the real Tina may be. 520 00:25:47,066 --> 00:25:51,767 She tells me that Trish was a former lover of Dr. Sonnier's. 521 00:26:04,400 --> 00:26:08,029 [narrator] Police follow up with Dr. Sonnier's sons to confirm Richelle's story 522 00:26:08,029 --> 00:26:08,266 [narrator] Police follow up with Dr. Sonnier's sons to confirm Richelle's story 523 00:26:08,367 --> 00:26:09,000 and get more background on Trish. 524 00:26:11,467 --> 00:26:14,800 [Powell] Trish had been Dr. Sonnier's dance instructor. 525 00:26:14,867 --> 00:26:17,166 She ran a dance studio here in Lubbock 526 00:26:17,266 --> 00:26:22,166 and the same dance studio where Dr. Sonnier ultimately met Richelle. 527 00:26:22,166 --> 00:26:25,900 But Dr. Sonnier's sons told us that she did not have 528 00:26:26,000 --> 00:26:28,266 a good relationship with the family. 529 00:26:28,266 --> 00:26:32,667 They did not like the way that she treated Dr. Sonnier when they were in public. 530 00:26:38,700 --> 00:26:39,000 [Johnson] Richelle tells me that after the relationship ended 531 00:26:42,266 --> 00:26:44,100 at the request of Dr. Sonnier, 532 00:26:44,166 --> 00:26:46,100 Trish becomes very angry with him. 533 00:26:46,166 --> 00:26:49,467 But is that a reason enough to kill? 534 00:26:49,567 --> 00:26:54,000 [narrator] To find out, police bring in Trish Berlanga for an interview. 535 00:26:54,100 --> 00:26:57,066 [Johnson] Trish voluntarily arrives at the police station. 536 00:26:57,066 --> 00:27:00,800 So we ask her, "Tell me about a letter from Tina. 537 00:27:00,867 --> 00:27:03,200 Do you know anything about that?" 538 00:27:03,266 --> 00:27:06,266 And Trish adamantly denies anything about that letter. 539 00:27:06,266 --> 00:27:08,029 She didn't write it, she doesn't know anything about the letter from Tina. 540 00:27:08,029 --> 00:27:09,000 She didn't write it, she doesn't know anything about the letter from Tina. 541 00:27:11,900 --> 00:27:16,667 "Okay, so tell us about your contacts with Dr. Sonnier. 542 00:27:16,667 --> 00:27:19,266 We know that you call him and you text." 543 00:27:19,266 --> 00:27:22,900 And she says, "I've barely spoken with him over the past ten months." 544 00:27:24,166 --> 00:27:26,567 [narrator] But Richelle claims that Trish is lying. 545 00:27:38,367 --> 00:27:39,000 [Powell] Trish wanted to get back together. 546 00:27:40,166 --> 00:27:42,700 Uh, she didn't ever want the relationship to end. 547 00:27:42,767 --> 00:27:44,266 Detectives obviously wanted to know 548 00:27:44,266 --> 00:27:47,567 where she was at the time of Dr. Sonnier's death 549 00:27:47,667 --> 00:27:49,667 and she tells us that she was in Florida. 550 00:27:51,500 --> 00:27:53,800 {\an8}[Johnson] We checked that alibi and it checks out. 551 00:27:55,200 --> 00:27:56,367 {\an8}She was in Florida, 552 00:27:56,467 --> 00:27:58,600 {\an8}so there was no way she was in Lubbock 553 00:27:58,667 --> 00:28:01,700 {\an8}to do the murder of Dr. Sonnier. 554 00:28:01,767 --> 00:28:04,567 {\an8}[narrator] Trish is now the third suspect to be eliminated 555 00:28:05,500 --> 00:28:07,667 after Dr. Dixon 556 00:28:07,667 --> 00:28:08,029 and the emergency room nurse Sharon. 557 00:28:08,029 --> 00:28:09,000 and the emergency room nurse Sharon. 558 00:28:11,166 --> 00:28:15,867 And all had been accused by and acquainted with Dr. Sonnier's last girlfriend, 559 00:28:15,967 --> 00:28:17,467 Richelle Shetina. 560 00:28:19,767 --> 00:28:22,200 [Powell] It seemed like every time the detectives went back 561 00:28:22,266 --> 00:28:25,100 and talked to Richelle, she had a different name. 562 00:28:25,166 --> 00:28:27,266 From the outside looking in, we kind of thought 563 00:28:27,266 --> 00:28:29,000 maybe she's a little too helpful. 564 00:28:30,600 --> 00:28:32,867 {\an8}Investigators often find it suspicious 565 00:28:32,967 --> 00:28:35,567 {\an8}when somebody appears too forthcoming, 566 00:28:35,567 --> 00:28:37,200 {\an8}offering multiple names 567 00:28:37,266 --> 00:28:38,029 {\an8}because perhaps this is a tactic 568 00:28:38,029 --> 00:28:39,000 {\an8}because perhaps this is a tactic 569 00:28:39,166 --> 00:28:42,066 {\an8}to divert suspicion from themselves. 570 00:28:42,066 --> 00:28:45,800 [narrator] Police now wonder if Richelle has been hiding something all along. 571 00:28:47,967 --> 00:28:49,500 [Johnson] And we find out that 572 00:28:49,567 --> 00:28:51,300 in the days leading up to the murder, 573 00:28:51,367 --> 00:28:55,367 Dr. Sonnier was actually texting friends to figure out 574 00:28:55,367 --> 00:28:58,000 [reading] 575 00:29:00,367 --> 00:29:03,100 [Powell] She had been pressuring him to marry her 576 00:29:03,166 --> 00:29:06,166 and he didn't want to have anything to do with that. 577 00:29:06,266 --> 00:29:08,029 [narrator] And that's counter to what Richelle believed and wanted. 578 00:29:08,029 --> 00:29:09,000 [narrator] And that's counter to what Richelle believed and wanted. 579 00:29:19,266 --> 00:29:22,000 [Johnson] After committing years of his life to a marriage, 580 00:29:22,066 --> 00:29:25,467 he doesn't want to be exclusive with anybody. 581 00:29:25,467 --> 00:29:27,367 [narrator] This revelation sheds new light 582 00:29:27,367 --> 00:29:30,600 on the last lunch Richelle had with Dr. Sonnier 583 00:29:30,667 --> 00:29:32,467 just hours before he was murdered. 584 00:29:34,567 --> 00:29:38,029 {\an8}So there was a possibility that when Dr. Sonnier 585 00:29:38,029 --> 00:29:38,467 {\an8}So there was a possibility that when Dr. Sonnier 586 00:29:38,467 --> 00:29:39,000 {\an8}and Richelle Shetina had lunch that day 587 00:29:40,867 --> 00:29:43,567 {\an8}that he might have been breaking up with her. 588 00:29:43,567 --> 00:29:46,367 [Johnson] And we find out the day that he was murdered, 589 00:29:46,367 --> 00:29:47,967 he seemed very agitated. 590 00:29:47,967 --> 00:29:51,967 And his coworkers asked, "Why are you so agitated?" 591 00:29:51,967 --> 00:29:55,166 And he said, "I'm trying to end my relationship with Richelle. 592 00:29:55,166 --> 00:29:57,367 I just don't know how to do it." 593 00:29:57,467 --> 00:30:00,567 [narrator] And soon after, Dr. Sonnier is murdered. 594 00:30:01,867 --> 00:30:03,100 [echoing thuds] 595 00:30:06,467 --> 00:30:08,029 Officer Johnson calls Richelle back to the station. 596 00:30:08,029 --> 00:30:09,000 Officer Johnson calls Richelle back to the station. 597 00:30:09,867 --> 00:30:14,066 For the first time, she finds out that Dr. Sonnier had planned to split with her 598 00:30:14,066 --> 00:30:15,767 on the very day he was killed. 599 00:30:18,367 --> 00:30:21,066 It's information that Richelle didn't anticipate. 600 00:30:26,266 --> 00:30:27,867 [Johnson] She's not really been forthcoming 601 00:30:27,867 --> 00:30:29,767 about the relationship, 602 00:30:29,867 --> 00:30:33,900 and we know that Dr. Sonnier is slipping out of Richelle's grasp. 603 00:30:35,266 --> 00:30:37,700 The relationship is starting to fade away. 604 00:30:37,767 --> 00:30:38,029 So the big question is could she be trying to lead us off the path 605 00:30:38,029 --> 00:30:39,000 So the big question is could she be trying to lead us off the path 606 00:30:42,100 --> 00:30:44,166 that would lead to her being the murderer? 607 00:30:44,166 --> 00:30:45,200 [echoing gunshots] 608 00:30:49,867 --> 00:30:50,867 [narrator] One week after the murder 609 00:30:50,867 --> 00:30:53,467 of prominent Dr. Joseph Sonnier, 610 00:30:53,467 --> 00:30:58,767 police in Lubbock, Texas, now suspect his girlfriend, Richelle Shetina, 611 00:30:58,767 --> 00:31:03,000 but Richelle strongly denies that she could ever harm the man she loved. 612 00:31:03,100 --> 00:31:06,000 [Johnson] We were able to finally get Richelle's phone records 613 00:31:07,166 --> 00:31:08,667 {\an8}and everything that she told us 614 00:31:08,667 --> 00:31:11,166 {\an8}was corroborated by her phone records. 615 00:31:12,300 --> 00:31:14,467 {\an8}[narrator] With Richelle's alibi confirmed, 616 00:31:14,567 --> 00:31:17,266 {\an8}investigators hit another dead end. 617 00:31:17,266 --> 00:31:18,721 [Powell] Everybody's getting a little frustrated at this point. 618 00:31:18,721 --> 00:31:19,000 [Powell] Everybody's getting a little frustrated at this point. 619 00:31:20,567 --> 00:31:24,367 [narrator] But on July 17, a week after Dr. Sonnier's murder, 620 00:31:24,367 --> 00:31:28,600 that frustration turns to hope when a man comes in with a shocking claim. 621 00:31:28,667 --> 00:31:31,467 {\an8}A man named Paul Reynolds who told them 622 00:31:31,567 --> 00:31:34,000 {\an8}that his friend confessed to him 623 00:31:34,100 --> 00:31:36,667 {\an8}that he had killed a doctor in Lubbock. 624 00:31:40,600 --> 00:31:43,667 [narrator] Paul Reynolds is a nursing assistant and former Green Beret 625 00:31:43,667 --> 00:31:45,700 living in Amarillo, Texas. 626 00:31:45,767 --> 00:31:48,200 [Johnson] Paul Reynolds has been staying with his friend 627 00:31:48,266 --> 00:31:48,721 and just within the past couple of weeks or so, 628 00:31:48,721 --> 00:31:49,000 and just within the past couple of weeks or so, 629 00:31:51,367 --> 00:31:53,900 his friend is acting really, really strange 630 00:31:54,000 --> 00:31:56,867 and it's enough to make Paul very nervous. 631 00:31:58,367 --> 00:32:00,667 And he tells us his name is David Shepard. 632 00:32:02,300 --> 00:32:04,800 [Monte] This could be a potential suspect. 633 00:32:04,867 --> 00:32:07,500 [narrator] Paul Reynolds says he became friends with David Shepard 634 00:32:07,567 --> 00:32:10,066 20 years earlier in the Green Berets. 635 00:32:10,066 --> 00:32:12,767 But now he fears Shepard has gone off the deep end, 636 00:32:14,467 --> 00:32:16,767 claiming to have killed Dr. Sonnier. 637 00:32:24,367 --> 00:32:26,200 {\an8}[Powell] Paul feels like it's necessary for him 638 00:32:26,266 --> 00:32:28,667 {\an8}to take immediate action from the things he's hearing. 639 00:32:39,767 --> 00:32:41,700 [Johnson] Paul is concerned for his own welfare. 640 00:32:42,867 --> 00:32:44,900 So he's got to stand up and stop it. 641 00:32:47,800 --> 00:32:48,721 We find out that David Shepard is a 51-year-old, 642 00:32:48,721 --> 00:32:49,000 We find out that David Shepard is a 51-year-old, 643 00:32:51,166 --> 00:32:53,300 unemployed salesman from Amarillo. 644 00:32:53,367 --> 00:32:56,300 He's got three daughters, he was divorced. 645 00:32:56,367 --> 00:32:59,600 But the question is why would an unemployed, 646 00:32:59,667 --> 00:33:03,100 51-year-old divorced salesman... 647 00:33:03,166 --> 00:33:06,867 Why would he want to kill a very successful doctor in Lubbock? 648 00:33:13,300 --> 00:33:16,100 [Monte] David Shepard had gone bankrupt a couple of times. 649 00:33:16,166 --> 00:33:17,600 He's financially troubled, 650 00:33:17,600 --> 00:33:18,721 was doing all kinds of different things to try to make ends meet, 651 00:33:18,721 --> 00:33:19,000 was doing all kinds of different things to try to make ends meet, 652 00:33:21,166 --> 00:33:25,767 including having Paul Reynolds sleep on the couch, maybe pay a little rent. 653 00:33:25,767 --> 00:33:29,100 The overriding theme is simple. 654 00:33:29,166 --> 00:33:31,100 He can't hold down a job. 655 00:33:31,166 --> 00:33:34,266 He's got three kids he's got to pay child support on. 656 00:33:34,367 --> 00:33:36,367 So is money a motive here? 657 00:33:39,166 --> 00:33:40,867 [narrator] But police first need to confirm 658 00:33:40,967 --> 00:33:42,867 whether Paul Reynolds's statement is credible. 659 00:33:44,600 --> 00:33:46,767 Or is he casting blame upon his friend 660 00:33:46,867 --> 00:33:48,721 because Reynolds himself is involved in the murder? 661 00:33:48,721 --> 00:33:49,000 because Reynolds himself is involved in the murder? 662 00:33:50,567 --> 00:33:52,166 There's one way to find out. 663 00:33:53,567 --> 00:33:56,000 {\an8}If an informer provides a number of details 664 00:33:56,066 --> 00:33:59,467 {\an8}that had never been released to the press or leaked to the press, 665 00:33:59,567 --> 00:34:04,767 {\an8}police know that there's some saliency to this informant's story. 666 00:34:12,367 --> 00:34:13,867 [Johnson] Paul Reynolds tells us 667 00:34:13,900 --> 00:34:18,066 that David Shepard had been stalking Sonnier for some time. 668 00:34:18,066 --> 00:34:18,721 And Richelle said that there was somebody that she and Dr. Sonnier believed 669 00:34:18,721 --> 00:34:19,000 And Richelle said that there was somebody that she and Dr. Sonnier believed 670 00:34:22,166 --> 00:34:25,667 to be in Sonnier's backyard taking pictures of them. 671 00:34:25,667 --> 00:34:28,467 [narrator] Now investigators wonder if Richelle's description 672 00:34:28,467 --> 00:34:30,867 of her stalker will match David Shepard. 673 00:34:32,867 --> 00:34:34,567 [Powell] One of the things Richelle had told us 674 00:34:34,567 --> 00:34:36,800 is that she had seen a very large man 675 00:34:36,867 --> 00:34:40,467 that she felt was stalking her at her gym. 676 00:34:40,467 --> 00:34:43,500 [Johnson] And Paul says, "Yeah, David is very large. 677 00:34:44,100 --> 00:34:46,767 He's a large man." 678 00:34:46,867 --> 00:34:48,721 [narrator] Paul then recounts David Shepard's alleged final trip to Lubbock 679 00:34:48,721 --> 00:34:49,000 [narrator] Paul then recounts David Shepard's alleged final trip to Lubbock 680 00:34:50,166 --> 00:34:52,600 on July 10th, the day of the murder. 681 00:34:54,800 --> 00:34:57,967 He left Amarillo and drove straight to Dr. Sonnier's home. 682 00:35:00,100 --> 00:35:01,500 [Monte] Paul Reynolds told them that 683 00:35:01,567 --> 00:35:06,367 David Shepard parks his car near Dr. Sonnier's house, 684 00:35:06,467 --> 00:35:09,500 walks around to the backyard and lies in wait. 685 00:35:27,967 --> 00:35:30,400 [gunshots] 686 00:35:30,467 --> 00:35:34,066 [narrator] The pushed-in window and the plastic bottle are details of the crime 687 00:35:34,066 --> 00:35:37,200 known only to police and to the killer. 688 00:35:37,266 --> 00:35:39,100 Officer Johnson is more convinced 689 00:35:39,166 --> 00:35:41,066 David Shepard is the likely shooter. 690 00:35:41,800 --> 00:35:43,467 But one question remains. 691 00:35:44,300 --> 00:35:47,100 So then we ask him, "Okay, why?" 692 00:35:47,166 --> 00:35:48,721 And then, Paul tells us, "Well, David told me he was hired 693 00:35:48,721 --> 00:35:49,000 And then, Paul tells us, "Well, David told me he was hired 694 00:35:50,467 --> 00:35:53,066 by Dr. Mike Dixon to kill Dr. Sonnier." 695 00:35:54,400 --> 00:35:58,266 [narrator] Mike Dixon was Richelle Shetina's ex-boyfriend. 696 00:35:58,266 --> 00:36:00,066 [Johnson] It was a huge break in the case. 697 00:36:00,066 --> 00:36:02,900 [Powell] Mike Dixon and David Shepard are good friends. 698 00:36:03,000 --> 00:36:05,567 [narrator] Their relationship puzzles police. 699 00:36:05,667 --> 00:36:08,767 How could such different people be such close friends? 700 00:36:10,300 --> 00:36:13,367 [Caspell] One is a well-established plastic surgeon, 701 00:36:13,367 --> 00:36:15,266 the other one is a drifter, 702 00:36:15,266 --> 00:36:16,967 someone that's on the quick take. 703 00:36:16,967 --> 00:36:18,721 And so, the relationship seems odd. 704 00:36:18,721 --> 00:36:19,000 And so, the relationship seems odd. 705 00:36:21,100 --> 00:36:23,600 {\an8}But it does really begin to have the hallmarks 706 00:36:23,667 --> 00:36:27,500 {\an8}of a true murder for hire plot. 707 00:36:27,567 --> 00:36:30,300 [Johnson] So, after all the information that Paul told us, 708 00:36:30,367 --> 00:36:33,600 we were certain that we had enough probably cause 709 00:36:33,667 --> 00:36:34,900 to obtain an arrest warrant 710 00:36:35,000 --> 00:36:36,266 for the arrest of David Shepard. 711 00:36:37,700 --> 00:36:40,166 [narrator] On July 16th, 2012, 712 00:36:40,266 --> 00:36:43,900 six days after Dr. Joseph Sonnier's homicide, 713 00:36:44,000 --> 00:36:48,721 Lubbock police arrest 51-year-old David Shepard for murder. 714 00:36:48,721 --> 00:36:48,800 Lubbock police arrest 51-year-old David Shepard for murder. 715 00:36:48,867 --> 00:36:49,000 Police secure a warrant to search Shepard's cellphone records 716 00:36:51,567 --> 00:36:53,467 for communications with Dr. Dixon. 717 00:36:54,567 --> 00:36:57,266 So we find out through David's cellphone records 718 00:36:57,266 --> 00:37:00,667 that he'd been texting with Dr. Dixon 719 00:37:01,767 --> 00:37:06,400 for several months and keeping Dr. Dixon apprised 720 00:37:06,467 --> 00:37:11,567 of the stalking that David had been doing at Dr. Sonnier's house. 721 00:37:12,600 --> 00:37:14,066 [Powell] And on David Shepard's phone 722 00:37:14,066 --> 00:37:15,400 is a picture of the paned window 723 00:37:15,467 --> 00:37:17,567 in Dr. Sonnier's backyard, 724 00:37:17,667 --> 00:37:18,721 but on the glass, you see David Shepard 725 00:37:18,721 --> 00:37:19,000 but on the glass, you see David Shepard 726 00:37:20,567 --> 00:37:22,867 in the reflection on the window. 727 00:37:22,867 --> 00:37:25,000 [Johnson] This picture places him right at the scene right 728 00:37:25,066 --> 00:37:26,467 before the crime happens. 729 00:37:28,367 --> 00:37:30,767 [narrator] Investigators now have all they need 730 00:37:30,767 --> 00:37:32,467 to charge the mastermind of the murder, 731 00:37:33,000 --> 00:37:34,467 Dr. Michael Dixon. 732 00:37:35,600 --> 00:37:37,900 [Johnson] We arrest Dr. Thomas Michael Dixon 733 00:37:38,000 --> 00:37:41,200 and charge him in connection with the murder of Dr. Joseph Sonnier. 734 00:37:42,667 --> 00:37:45,467 [Powell] Dr. Dixon and David Shepard were both charged 735 00:37:45,467 --> 00:37:46,600 with capital murder. 736 00:37:46,600 --> 00:37:48,721 I made an offer to David Shepard's attorneys 737 00:37:48,721 --> 00:37:49,000 I made an offer to David Shepard's attorneys 738 00:37:50,066 --> 00:37:52,467 that if he cooperated with law enforcement 739 00:37:52,567 --> 00:37:55,100 and then ultimately testified against Mike Dixon 740 00:37:55,166 --> 00:37:57,467 that we would waive the death penalty. 741 00:37:57,467 --> 00:37:59,400 [narrator] David Shepard accepts their offer, 742 00:37:59,467 --> 00:38:02,166 recounting key details of what led to the murder. 743 00:38:07,367 --> 00:38:10,166 [Powell] David Shepard tells us that Mike Dixon 744 00:38:10,166 --> 00:38:12,600 was obsessed with Richelle Shetina. 745 00:38:12,667 --> 00:38:15,100 That he was very angry with her, wanted her back. 746 00:38:15,166 --> 00:38:17,166 She's dumped him 747 00:38:17,166 --> 00:38:18,721 and dating another highly successful doctor 748 00:38:18,721 --> 00:38:19,000 and dating another highly successful doctor 749 00:38:20,967 --> 00:38:22,567 and he... He wanted revenge. 750 00:38:35,567 --> 00:38:37,467 [Johnson] So you had the perfect storm. 751 00:38:37,567 --> 00:38:39,266 You had somebody desperate for money 752 00:38:39,367 --> 00:38:43,667 and you had somebody willing to pony up to get revenge. 753 00:38:43,667 --> 00:38:46,367 And then, he got some girl that was a stripper 754 00:38:46,467 --> 00:38:48,200 in a bar there in Amarillo 755 00:38:48,266 --> 00:38:48,721 to write this letter and sign it Tina. 756 00:38:48,721 --> 00:38:49,000 to write this letter and sign it Tina. 757 00:38:51,166 --> 00:38:55,367 So in the very beginning, they weren't about plotting a murder. 758 00:38:55,367 --> 00:38:57,166 They were about driving a wedge 759 00:38:57,266 --> 00:39:00,066 between Richelle and Dr. Sonnier, 760 00:39:00,066 --> 00:39:03,100 but those ideas never pan out. 761 00:39:03,166 --> 00:39:06,467 {\an8}[Monte] So now this plan has escalated to murder. 762 00:39:08,000 --> 00:39:12,767 {\an8}[Johnson] Dr. Dixon provides him with a .25 caliber weapon 763 00:39:12,867 --> 00:39:15,600 and David tells us that Dr. Dixon paid him 764 00:39:15,667 --> 00:39:18,367 in three silver bars for the murder. 765 00:39:18,467 --> 00:39:18,721 Dr. Dixon already advanced him one silver bar, 766 00:39:18,721 --> 00:39:19,000 Dr. Dixon already advanced him one silver bar, 767 00:39:22,066 --> 00:39:24,166 which he traded in for cash, 768 00:39:24,166 --> 00:39:27,667 and then on the night of the murder, he provided him two more, 769 00:39:27,667 --> 00:39:31,467 which he then went and pawned for cash money as well. 770 00:39:31,567 --> 00:39:35,200 [narrator] Police confirm the sales of the silver bars at the pawn shop. 771 00:39:35,266 --> 00:39:37,400 David Shepard's story checks out. 772 00:39:39,600 --> 00:39:42,266 {\an8}[Caspell] And so, we now have the pieces of the timeline 773 00:39:42,367 --> 00:39:45,200 {\an8}of the last 24 hours of Dr. Sonnier's life. 774 00:39:46,767 --> 00:39:48,721 [Johnson] So, on July 9th, at 8:26 p.m., 775 00:39:48,721 --> 00:39:49,000 [Johnson] So, on July 9th, at 8:26 p.m., 776 00:39:51,967 --> 00:39:54,867 David Shepard sends a message to Dr. Dixon... 777 00:39:54,967 --> 00:39:56,567 [reading] 778 00:39:56,567 --> 00:39:58,000 Dr. Dixon replies... 779 00:39:58,100 --> 00:39:59,567 [reading] 780 00:40:00,767 --> 00:40:03,367 {\an8}[Monte] The following day, Dr. Joseph Sonnier arrives 781 00:40:03,367 --> 00:40:05,767 {\an8}at Covenant Medical Center at 10 a.m. 782 00:40:05,867 --> 00:40:08,600 {\an8}[Powell] At about 1 o'clock, on the day of the murder, 783 00:40:08,667 --> 00:40:12,100 {\an8}Richelle and Dr. Sonnier had gone to lunch 784 00:40:12,166 --> 00:40:15,700 {\an8}and he had returned back to the hospital. 785 00:40:15,767 --> 00:40:18,721 {\an8}[Johnson] At 4:45 p.m., David Shepard arrives at Dr. Sonnier's house 786 00:40:18,721 --> 00:40:19,000 {\an8}[Johnson] At 4:45 p.m., David Shepard arrives at Dr. Sonnier's house 787 00:40:20,667 --> 00:40:24,700 {\an8}goes to the backyard and lies in wait for Dr. Sonnier. 788 00:40:26,200 --> 00:40:29,567 {\an8}[Powell] Dr. Sonnier arrived at approximately 7:15 p.m. 789 00:40:30,367 --> 00:40:31,967 {\an8}At 7:44 p.m... 790 00:40:33,266 --> 00:40:35,367 {\an8}David sends Dr. Dixon a text. 791 00:40:35,467 --> 00:40:39,567 {\an8}[reading] Then all the messaging correspondence stops. 792 00:40:40,600 --> 00:40:42,100 [Caspell] Inside the living room of his home, 793 00:40:42,166 --> 00:40:43,767 Dr. Sonnier pours himself a drink 794 00:40:43,867 --> 00:40:46,000 and looks out the back window of his home. 795 00:40:47,400 --> 00:40:48,721 [Johnson] Dr. Sonnier looks outside through a back window 796 00:40:48,721 --> 00:40:49,000 [Johnson] Dr. Sonnier looks outside through a back window 797 00:40:50,266 --> 00:40:53,667 and sees David sitting there in his backyard. 798 00:40:55,100 --> 00:40:57,100 [crashes] 799 00:40:57,166 --> 00:41:00,567 [Caspell] David Shepard approaches the window, pushes it down, 800 00:41:00,667 --> 00:41:02,900 raises his weapon and fires one time. 801 00:41:03,000 --> 00:41:04,266 [gunshot] 802 00:41:04,266 --> 00:41:07,100 [Johnson] David gets inside, shoots four more times, 803 00:41:07,166 --> 00:41:10,667 and then, Dr. Sonnier stumbles into the garage 804 00:41:10,767 --> 00:41:14,500 where David follows him as Dr. Sonnier collapses onto the floor. 805 00:41:14,567 --> 00:41:18,721 David goes up to the body, removes an assassin's knife from his bag 806 00:41:18,721 --> 00:41:19,000 David goes up to the body, removes an assassin's knife from his bag 807 00:41:19,367 --> 00:41:21,700 and repeatedly stabs Dr. Sonnier. 808 00:41:23,000 --> 00:41:26,100 {\an8}Dr. Sonnier dies between 7:45 and 8:00 p.m. 809 00:41:28,767 --> 00:41:33,000 {\an8}And then, he leaves, drives to a lake and throws the murder weapon in a lake. 810 00:41:34,867 --> 00:41:37,367 [Powell] He ultimately took detectives to that lake 811 00:41:37,367 --> 00:41:39,367 and they were able to find that gun. 812 00:41:39,367 --> 00:41:44,400 {\an8}[Arntfield] It is able to be traced back to Dr. Dixon. 813 00:41:44,467 --> 00:41:46,967 {\an8}David Shepard pleads guilty to the murder 814 00:41:46,967 --> 00:41:48,721 {\an8}and is now serving life in prison. 815 00:41:48,721 --> 00:41:49,000 {\an8}and is now serving life in prison. 816 00:41:50,367 --> 00:41:54,567 {\an8}[Powell] Mike Dixon was found guilty of capital murder of Dr. Sonnier 817 00:41:54,667 --> 00:41:56,700 {\an8}and was sentenced to life without parole. 818 00:41:58,166 --> 00:42:00,600 {\an8}This case is defined by obsession. 819 00:42:00,667 --> 00:42:02,400 {\an8}It's obsession with money, 820 00:42:02,467 --> 00:42:04,400 {\an8}it's obsession with love 821 00:42:04,467 --> 00:42:07,467 {\an8}and it's not being able to move on with your life