1 00:00:02,080 --> 00:00:03,920 A young model. (CAMERA FLASHES) 2 00:00:03,960 --> 00:00:05,320 A hitman. 3 00:00:05,360 --> 00:00:07,880 MAN: In a quiet, middle-class unit... 4 00:00:07,920 --> 00:00:09,200 (MUFFLED GUNSHOT) 5 00:00:09,240 --> 00:00:12,880 ..a beautiful young woman is literally executed. 6 00:00:12,920 --> 00:00:14,160 Police secrets... 7 00:00:14,200 --> 00:00:17,760 She's laying in her grave with a question mark over what's going on. 8 00:00:18,400 --> 00:00:20,800 And the cat who saw it all. 9 00:00:20,840 --> 00:00:22,120 I think 'unusual' would probably 10 00:00:22,160 --> 00:00:24,880 be an understatement in the circumstances. 11 00:00:25,520 --> 00:00:28,120 Our investigation starts now. 12 00:00:30,160 --> 00:00:33,160 (THEME MUSIC) 13 00:00:38,160 --> 00:00:39,440 (SIREN BLARES) 14 00:00:47,760 --> 00:00:49,920 Good evening. I'm Liz Hayes. 15 00:00:49,960 --> 00:00:53,000 And this is Under Investigation. 16 00:01:01,320 --> 00:01:05,880 She's a stunning bride at a fairytale Adelaide wedding. 17 00:01:05,920 --> 00:01:09,320 # My skin... # 18 00:01:09,360 --> 00:01:12,720 Eighteen months later she's shot dead. 19 00:01:12,760 --> 00:01:15,080 # Is crawling again... # 20 00:01:15,120 --> 00:01:17,520 She was caught unawares and she was executed. 21 00:01:17,560 --> 00:01:18,560 (MUFFLED GUN SHOT) 22 00:01:18,600 --> 00:01:19,840 It was an out and out hit. 23 00:01:19,880 --> 00:01:20,880 (MUFFLED GUNSHOT) 24 00:01:20,920 --> 00:01:23,360 # At the back of my mind... # 25 00:01:23,400 --> 00:01:26,160 It's 4 July 1997, 26 00:01:26,200 --> 00:01:31,240 and even for a city seemingly accustomed to unusual murders, 27 00:01:31,280 --> 00:01:36,840 the killing of Corinna Marr is particularly shocking. 28 00:01:36,880 --> 00:01:41,520 It was clinical, it was swift, it was ruthless. 29 00:01:42,880 --> 00:01:45,120 It's been a quarter of a century... 30 00:01:45,160 --> 00:01:48,240 MAN: Police say it's possible Mrs Marr did know her killer. 31 00:01:48,280 --> 00:01:51,560 ..swirling with dark and sensational rumours. 32 00:01:51,600 --> 00:01:54,280 She fell victim to an obsessed stalker. 33 00:01:54,320 --> 00:01:57,640 Her father, distraught, as he ran to the scene... 34 00:01:57,680 --> 00:01:59,120 That's my daughter in there. 35 00:01:59,160 --> 00:02:02,160 ..is still devastated today. 36 00:02:02,200 --> 00:02:04,440 It's been so long now. 37 00:02:04,480 --> 00:02:07,760 You think you'd get over something like this but you don't. 38 00:02:07,800 --> 00:02:10,120 It's with you every day. 39 00:02:11,680 --> 00:02:14,840 The killer or killers have never been caught... 40 00:02:14,880 --> 00:02:17,880 MAN: The search for a motif has so far baffled police. 41 00:02:17,920 --> 00:02:22,080 ..despite police targeting dozens of suspects. 42 00:02:22,120 --> 00:02:24,040 Were you in love with Corinna? 43 00:02:24,080 --> 00:02:29,760 One of those suspects was Corinna's close friend and boss, Colin Todd. 44 00:02:29,800 --> 00:02:32,400 I was giving her advice as a friend 45 00:02:32,440 --> 00:02:35,760 in regards to affairs with other people. 46 00:02:35,800 --> 00:02:39,480 "You're doing situations too close to home." 47 00:02:40,120 --> 00:02:42,960 Also joining me tonight, Graham Archer, 48 00:02:43,000 --> 00:02:46,240 veteran current affairs journalist and author. 49 00:02:46,280 --> 00:02:51,880 The person who did this was clearly on a mission to murder. 50 00:02:51,920 --> 00:02:56,640 And Alex Krstic, retired Victorian Major Crime Squad detective 51 00:02:56,680 --> 00:02:58,480 and ballistics expert. 52 00:02:58,520 --> 00:03:01,760 There's something going on that we don't know about 53 00:03:01,800 --> 00:03:03,920 and the police have dug their heels in about 54 00:03:03,960 --> 00:03:05,720 passing this information on. 55 00:03:10,960 --> 00:03:14,000 Twenty-five-year-old Corinna Marr was always popular. 56 00:03:16,560 --> 00:03:19,960 MAN: Even from when she was knee-high to a grasshopper 57 00:03:20,000 --> 00:03:25,440 she was always funny and out doing things. 58 00:03:25,480 --> 00:03:27,400 Never a dull moment with her. 59 00:03:28,280 --> 00:03:30,760 An up-and-coming real estate agent in Adelaide 60 00:03:30,800 --> 00:03:36,800 and someone, her longtime friend Colin Todd says, he was drawn to 61 00:03:36,840 --> 00:03:41,440 from the moment they first met when working in the same office. 62 00:03:41,480 --> 00:03:46,040 COLIN: She was the receptionist there and I was a salesperson. 63 00:03:46,080 --> 00:03:47,960 And we got along. 64 00:03:48,000 --> 00:03:49,680 And you found her attractive. 65 00:03:49,720 --> 00:03:51,440 Yes, I did. Yeah, no doubts. 66 00:03:51,480 --> 00:03:54,720 No-one would not find her attractive. 67 00:03:55,840 --> 00:04:00,560 When Colin opened his own real estate business, Corinna joined him. 68 00:04:00,600 --> 00:04:04,760 He was her boss but also, he says, her confidant. 69 00:04:05,680 --> 00:04:08,720 COLIN: Once Corinna heard I was going to open my own office, 70 00:04:08,760 --> 00:04:10,400 she said, "I'm coming with you." 71 00:04:10,440 --> 00:04:15,680 Certainly I can't deny the fact that something clicked 72 00:04:15,720 --> 00:04:18,880 in regards to our personalities, 73 00:04:18,920 --> 00:04:21,680 and she took a liking to me. 74 00:04:22,560 --> 00:04:27,800 Out of the office, Corinna had a second career as a part-time model. 75 00:04:28,560 --> 00:04:32,960 Her bubbly personality proving popular for promotional work, 76 00:04:33,000 --> 00:04:35,800 often in pubs and clubs at night, 77 00:04:35,840 --> 00:04:40,400 but perhaps also attracting unwanted attention. 78 00:04:40,440 --> 00:04:42,400 MAN: I think that she didn't 79 00:04:42,440 --> 00:04:46,120 realise the effect she was having on some men, 80 00:04:46,160 --> 00:04:49,040 particularly given that she was doing this promotional work 81 00:04:49,080 --> 00:04:53,760 in hotels where people were drinking, largely a male population. 82 00:04:53,800 --> 00:04:56,600 Mmm. I'm loath to shame her if that's... 83 00:04:56,640 --> 00:04:57,880 I don't think... 84 00:04:57,920 --> 00:05:00,440 ..going to be part of people's thinking. 85 00:05:00,480 --> 00:05:01,760 Look, I don't think... 86 00:05:01,800 --> 00:05:05,880 In the context of this, I don't think her behaviour 87 00:05:05,920 --> 00:05:08,160 is something that you should be used to shame her. 88 00:05:08,200 --> 00:05:10,360 It's an opportunity for investigators 89 00:05:10,400 --> 00:05:13,960 to identify motives and to identify suspects. 90 00:05:15,040 --> 00:05:19,480 Corinna was married to Robert Marr, an air-conditioner technician 91 00:05:19,520 --> 00:05:25,520 who told police he had no fears for his wife or concerns about her work. 92 00:05:27,120 --> 00:05:30,760 Her husband Robert Marr said that she was "an independent woman, 93 00:05:30,800 --> 00:05:32,840 "a real battler, and worked very hard." 94 00:05:32,880 --> 00:05:35,120 Does that sum her up? Yes, it does, actually. 95 00:05:35,160 --> 00:05:40,600 But according to Colin, Corinna had talked of some struggles, 96 00:05:40,640 --> 00:05:43,240 and that the new home the couple was building 97 00:05:43,280 --> 00:05:46,440 was causing them financial stress. 98 00:05:47,520 --> 00:05:50,240 COLIN: She did have marital problems. 99 00:05:50,280 --> 00:05:53,880 The marriage was up and down. 100 00:05:53,920 --> 00:05:56,840 Though she spoke about leaving Robert, they... 101 00:05:56,880 --> 00:05:58,800 She had direct conversations with you? 102 00:05:58,840 --> 00:05:59,960 Yes, yes. 103 00:06:00,000 --> 00:06:02,360 She actually indicated she married the wrong person, to me, 104 00:06:02,400 --> 00:06:03,680 at one stage. 105 00:06:03,720 --> 00:06:06,080 And why was she telling you, do you think? 106 00:06:06,120 --> 00:06:10,240 Well, she could confide in me and vice versa. 107 00:06:10,280 --> 00:06:12,200 I confided in her. 108 00:06:12,240 --> 00:06:14,040 We were best of friends. 109 00:06:15,880 --> 00:06:19,680 Claims of affairs and romantic liaisons 110 00:06:19,720 --> 00:06:21,280 would follow Corinna's death. 111 00:06:22,040 --> 00:06:25,760 But at the time, whatever the state of her marriage, 112 00:06:25,800 --> 00:06:30,840 on the day she is murdered, 4 July 1997, 113 00:06:30,880 --> 00:06:34,520 there's no hint her life is in danger. 114 00:06:35,960 --> 00:06:39,040 She's been at work and leaves in the early afternoon 115 00:06:39,080 --> 00:06:42,960 to prepare for a promotional job at an Adelaide pub that night. 116 00:06:44,360 --> 00:06:49,520 COLIN: I reckon it was 2:30pm, thereabouts, she left for home. 117 00:06:49,560 --> 00:06:51,600 But before she leaves, 118 00:06:51,640 --> 00:06:54,880 Corinna shows Colin Todd the outfit she'll be wearing. 119 00:06:54,920 --> 00:06:58,120 She held up a lycra outfit 120 00:06:58,160 --> 00:07:01,600 and I was a bit taken aback because it looked so small. 121 00:07:01,640 --> 00:07:03,600 I think they're called catsuits, kind of... 122 00:07:03,640 --> 00:07:05,320 Catsuit, yes, that's right. 123 00:07:05,360 --> 00:07:08,040 And she was in a good mood? Yeah, yeah. 124 00:07:08,080 --> 00:07:12,360 The plan is for Colin to pick Corinna up from home 125 00:07:12,400 --> 00:07:15,240 and take her to her promotional job, 126 00:07:15,280 --> 00:07:17,800 something he says he often did. 127 00:07:18,600 --> 00:07:22,920 I said, "I'll catch you later and I'll be there on time." 128 00:07:22,960 --> 00:07:26,400 What was your basic role when you went out to these functions? 129 00:07:26,440 --> 00:07:30,760 Just to actually keep an eye on her and...as a friend. 130 00:07:30,800 --> 00:07:33,360 Was there an issue do you think? 131 00:07:33,400 --> 00:07:35,680 Was it just late night? Was it the location? 132 00:07:35,720 --> 00:07:36,920 Was it their pubs were... 133 00:07:36,960 --> 00:07:40,880 Well, some of the promotion gear that she had to wear 134 00:07:40,920 --> 00:07:42,400 was pretty revealing. 135 00:07:43,400 --> 00:07:44,920 Corinna's husband Robert too would 136 00:07:44,960 --> 00:07:48,400 sometimes attend her promotional events. 137 00:07:48,440 --> 00:07:52,400 COLIN: Robert was a very hard person to be with. 138 00:07:52,440 --> 00:07:54,400 Was his and your relationship not good? 139 00:07:54,440 --> 00:07:56,280 I wouldn't say 'not good'. 140 00:07:56,320 --> 00:08:01,880 Basically it was made known to me that he had a temper on him 141 00:08:01,920 --> 00:08:03,800 and not to upset him. 142 00:08:04,480 --> 00:08:06,560 Who made that known? Corinna. 143 00:08:06,600 --> 00:08:11,560 Colin admits his relationship with Corinna and Robert was complex 144 00:08:11,600 --> 00:08:15,680 and that occasionally he felt there was some tension. 145 00:08:16,480 --> 00:08:17,640 Can I ask you this. 146 00:08:17,680 --> 00:08:20,640 Do you think Robert understood you found Corinna attractive 147 00:08:20,680 --> 00:08:22,240 and didn't like it? 148 00:08:22,280 --> 00:08:26,920 I suspect he might have thought I was having an affair with her. 149 00:08:30,360 --> 00:08:32,040 MAN: This is a very small room. 150 00:08:32,080 --> 00:08:35,680 It's a convenient room in which to commit a murder like this. 151 00:08:35,720 --> 00:08:38,480 We enter the crime scene. 152 00:08:38,520 --> 00:08:40,200 She's got no exit, no way of escaping, 153 00:08:40,240 --> 00:08:41,840 even if she'd wanted to. 154 00:08:41,880 --> 00:08:44,240 And an extraordinary twist. 155 00:08:44,280 --> 00:08:45,480 He sees the cat 156 00:08:45,520 --> 00:08:48,240 which is within a matter of centimetres away from the body 157 00:08:48,280 --> 00:08:51,040 and then walks out of the room without seeing his wife. 158 00:08:51,080 --> 00:08:53,480 That's next on Under Investigation. 159 00:09:04,440 --> 00:09:08,680 LIZ HAYES: It's the afternoon of 4 July 1997. 160 00:09:08,720 --> 00:09:12,320 The last day of Corinna Marr's life. 161 00:09:12,360 --> 00:09:14,000 # Pray to the gods 162 00:09:14,040 --> 00:09:16,680 # There's blood on the streets... # 163 00:09:16,720 --> 00:09:20,280 The 25-year-old real estate agent had part-time model 164 00:09:20,320 --> 00:09:24,040 has been hired for a promotional event that night. 165 00:09:26,120 --> 00:09:29,080 She's left the office to change at home, 166 00:09:29,120 --> 00:09:32,480 where her real estate boss and close friend, Colin Todd, 167 00:09:32,520 --> 00:09:34,080 planned to pick her up. 168 00:09:34,120 --> 00:09:39,440 I reckon it was 2:30pm, thereabouts, she left for home. 169 00:09:39,480 --> 00:09:41,360 And she was in a good mood? 170 00:09:41,400 --> 00:09:43,200 Yeah, yeah. Very good mood. 171 00:09:43,240 --> 00:09:44,640 She wasn't worried by anything? No. 172 00:09:47,000 --> 00:09:49,360 At around 3:15pm, her husband, 173 00:09:49,400 --> 00:09:52,760 air-conditioner repair man Robert Marr, 174 00:09:52,800 --> 00:09:57,160 has finished work and begins the 30-minute drive home. 175 00:09:58,000 --> 00:10:02,640 According to Colin, the two men have an uneasy relationship. 176 00:10:03,560 --> 00:10:06,880 I suspect he might have thought I was having an affair with her 177 00:10:06,920 --> 00:10:07,960 but I wasn't. 178 00:10:08,000 --> 00:10:09,000 Why do you say that? 179 00:10:09,040 --> 00:10:11,560 Corinna told me that Robert was getting annoyed 180 00:10:11,600 --> 00:10:16,600 because she was spending so much time with me at the office. 181 00:10:16,640 --> 00:10:18,360 Were you in love with Corinna? 182 00:10:18,400 --> 00:10:19,880 Look, she was... 183 00:10:19,920 --> 00:10:21,880 I've been asked this question before 184 00:10:21,920 --> 00:10:25,240 and I'd have to say she was my best friend. 185 00:10:26,160 --> 00:10:28,320 She was attractive. 186 00:10:28,360 --> 00:10:32,040 There was no doubt there was an attraction from her to me. 187 00:10:32,080 --> 00:10:34,960 I did like her overall, 188 00:10:35,000 --> 00:10:39,400 but, if you're asking, did I have an affair with her, a sexual affair, 189 00:10:39,440 --> 00:10:40,680 no. 190 00:10:40,720 --> 00:10:42,160 We never even kissed. 191 00:10:43,120 --> 00:10:44,760 But if Robert Marr is concerned 192 00:10:44,800 --> 00:10:47,080 about Corinna's relationship with Colin, 193 00:10:47,120 --> 00:10:50,360 it's not what he will later tell police. 194 00:11:04,240 --> 00:11:09,880 It's now around 3:30pm, an hour after Corinna has left the office. 195 00:11:10,600 --> 00:11:13,120 We believe that she's come home, she's had a shower? 196 00:11:13,160 --> 00:11:16,120 Shower. She was doing her hair, apparently 197 00:11:17,080 --> 00:11:19,000 The neighbours had heard this hairdryer. 198 00:11:19,040 --> 00:11:20,640 ALEX: And she's changed into her... 199 00:11:20,680 --> 00:11:23,400 She's in her costume. ..her catsuit, yeah. 200 00:11:23,440 --> 00:11:24,720 That's right. 201 00:11:25,560 --> 00:11:29,000 She was clearly preparing herself to go to work, 202 00:11:29,040 --> 00:11:30,640 expecting to be picked up by you. 203 00:11:30,680 --> 00:11:31,720 Yeah. 204 00:11:31,760 --> 00:11:33,760 In the meantime, something has happened, 205 00:11:33,800 --> 00:11:36,560 and that's the something that we're interested in. 206 00:11:38,720 --> 00:11:40,720 Robert Marr is driving home. 207 00:11:41,600 --> 00:11:46,200 Colin Todd will say he too is heading to the Marrs' unit 208 00:11:46,240 --> 00:11:47,800 to pick up Corinna. 209 00:11:48,720 --> 00:11:52,680 Robert Marr tells police he comes home shortly before 4pm, 210 00:11:52,720 --> 00:11:54,960 and finds the door open, 211 00:11:55,000 --> 00:11:57,160 and it's obvious Corinna is there. 212 00:11:57,200 --> 00:11:58,960 Her purse on the couch. 213 00:11:59,840 --> 00:12:04,280 But his account of what happens next is quite extraordinary. 214 00:12:05,000 --> 00:12:07,640 Robert Marr says he enters the bedroom 215 00:12:07,680 --> 00:12:12,040 to retrieve a book of business cards from a side table. 216 00:12:12,080 --> 00:12:17,520 Incredibly, he doesn't see his dead wife lying on the bed. 217 00:12:18,400 --> 00:12:23,120 But he does see the family's cat curled up next to Corinna's body. 218 00:12:23,840 --> 00:12:29,240 It is an astonishing admission and one he never needed to make. 219 00:12:30,240 --> 00:12:32,960 And for that reason, police believed him. 220 00:12:40,880 --> 00:12:45,200 Alex, the detective viewed it as so unusual it had to be true. 221 00:12:45,240 --> 00:12:48,280 Well, I think 'unusual' would probably be an understatement 222 00:12:48,320 --> 00:12:50,240 in the circumstances. 223 00:12:50,280 --> 00:12:51,680 And the detectives, 224 00:12:51,720 --> 00:12:53,800 one of the things you learn early days 225 00:12:53,840 --> 00:12:55,200 when you become a detective, 226 00:12:55,240 --> 00:12:57,600 is to approach things with an open mind, 227 00:12:57,640 --> 00:12:59,960 and not to believe the first thing that you're told. 228 00:13:00,000 --> 00:13:03,240 I think also that if that was the standard, 229 00:13:03,280 --> 00:13:08,000 and police decided that all bizarre statements must be true, 230 00:13:08,040 --> 00:13:09,880 no crimes would be solved. 231 00:13:11,200 --> 00:13:15,240 ALEX: You're talking about a room that's 3m square, you know? 232 00:13:15,280 --> 00:13:18,400 Probably 80% of which is taken up by the double bed 233 00:13:18,440 --> 00:13:20,680 with a body laying in the middle of it. 234 00:13:25,280 --> 00:13:28,640 In our studio we've replicated the crime scene, 235 00:13:28,680 --> 00:13:31,800 building the bedroom where Corinna's body was found. 236 00:13:31,840 --> 00:13:33,600 So, this is the bedroom. 237 00:13:33,640 --> 00:13:39,120 With the exact dimensions and the reported lighting conditions. 238 00:13:40,000 --> 00:13:41,240 ALEX: As he walks into the room, 239 00:13:41,280 --> 00:13:44,440 he's within a metre of his wife's dead body on the bed. 240 00:13:44,480 --> 00:13:45,760 He sees the cat 241 00:13:45,800 --> 00:13:48,520 which is within a matter of centimetres away from the body. 242 00:13:49,840 --> 00:13:52,440 He observes the cat move, 243 00:13:52,480 --> 00:13:54,600 then he picks up the book of cards, 244 00:13:54,640 --> 00:13:57,400 and then walks out of the room without seeing his wife. 245 00:13:59,120 --> 00:14:00,720 But she's in black, 246 00:14:00,760 --> 00:14:01,960 the cat's black, 247 00:14:02,000 --> 00:14:03,440 the sheets are black. 248 00:14:04,040 --> 00:14:05,560 You don't think she could have just... 249 00:14:05,600 --> 00:14:07,040 Well, the thing was that 250 00:14:07,080 --> 00:14:10,320 how dark or how light it was really isn't the issue. 251 00:14:10,360 --> 00:14:15,600 The issue is that he actually saw the black cat on the black bed. 252 00:14:15,640 --> 00:14:20,160 I would say, based on what we know and what we've seen, 253 00:14:20,200 --> 00:14:24,360 I would be extremely surprised that he didn't see the body on the bed. 254 00:14:25,320 --> 00:14:29,320 It's when Robert Marr enters the bedroom a second time 255 00:14:29,360 --> 00:14:34,160 that he says he sees Corinna and at first thinks she is sleeping. 256 00:14:34,200 --> 00:14:37,000 But then realises she is not. 257 00:14:37,040 --> 00:14:40,800 He immediately call for help and begins CPR. 258 00:14:41,720 --> 00:14:44,080 So tiny are the bullet wounds, 259 00:14:44,120 --> 00:14:47,240 he says he doesn't know she's been shot. 260 00:14:47,280 --> 00:14:51,120 MAN: Police the time of death at between 2:30 and 4:00pm. 261 00:14:51,160 --> 00:14:52,400 It is the ambulance officers 262 00:14:52,440 --> 00:14:57,720 who will reveal Corinna has been shot in the forehead and chest. 263 00:14:57,760 --> 00:14:59,720 She had a bullet hole in her chest 264 00:14:59,760 --> 00:15:01,480 and she had a bullet hole in her head. 265 00:15:01,520 --> 00:15:04,040 Which automatically turns this thing into a murder. 266 00:15:05,480 --> 00:15:08,680 Corinna's dad, Trevor King, is working nearby. 267 00:15:09,400 --> 00:15:12,840 He hears the dreadful news from his wife Denise 268 00:15:12,880 --> 00:15:15,760 and rushes to meet her at the unit. 269 00:15:15,800 --> 00:15:20,520 And I can remember flying down that street in the glass truck, 270 00:15:20,560 --> 00:15:23,760 going over the bumps. 271 00:15:23,800 --> 00:15:26,600 And glass crashing all around me. 272 00:15:27,600 --> 00:15:31,000 And I pulled up and I ran towards the flat. 273 00:15:32,000 --> 00:15:35,200 News footage capturing that terrible moment. 274 00:15:38,800 --> 00:15:41,960 This young policeman tried to stop me 275 00:15:42,000 --> 00:15:45,400 and within seconds I was gonna biff him. 276 00:15:46,440 --> 00:15:50,760 I went in there and Denise said, "She's dead. 277 00:15:50,800 --> 00:15:52,680 "Someone's killed her." 278 00:15:54,520 --> 00:15:56,880 The family is devastated. 279 00:15:56,920 --> 00:16:01,600 Robert is suffering something terrible and, you know, we all are. 280 00:16:02,600 --> 00:16:04,120 (CRIES) 281 00:16:04,160 --> 00:16:08,960 Corinna has been shot twice with a small calibre weapon, 282 00:16:09,000 --> 00:16:11,360 her wounds barely visible. 283 00:16:11,400 --> 00:16:15,520 But a tiny shell casing is found by paramedics on the bed. 284 00:16:16,480 --> 00:16:22,000 It was clear that inside this small unit in suburban Adelaide, 285 00:16:22,040 --> 00:16:26,560 Corinna Marr's life was ended with extreme precision. 286 00:16:27,240 --> 00:16:28,920 There's no doubt that this was a hit. 287 00:16:28,960 --> 00:16:30,680 Oh, this is an execution. 288 00:16:30,720 --> 00:16:31,960 This is a straight out execution. 289 00:16:32,000 --> 00:16:33,640 (TWO MUFFLED GUN SHOTS) 290 00:16:33,680 --> 00:16:35,640 Carried out by professional killer. 291 00:16:36,320 --> 00:16:39,840 Ballistics expert and former detective, Alex Krstic, 292 00:16:39,880 --> 00:16:41,920 analyses the scene. 293 00:16:41,960 --> 00:16:43,640 This is a very small room. 294 00:16:43,680 --> 00:16:47,000 It's a convenient room in which to commit a murder like this. 295 00:16:47,840 --> 00:16:50,400 She's got no exit, no way of escaping, 296 00:16:50,440 --> 00:16:52,000 even if she'd wanted to. 297 00:16:52,040 --> 00:16:54,920 Well, we know it was broad daylight. It is. 298 00:16:54,960 --> 00:16:57,240 We know somebody knew she was going to be home. 299 00:16:57,960 --> 00:17:01,880 Well, either somebody was laying in wait or they followed her home, 300 00:17:01,920 --> 00:17:03,280 or they knew she was going to be home 301 00:17:03,320 --> 00:17:04,960 by ringing her on the telephone. 302 00:17:05,000 --> 00:17:08,760 There are any number of scenarios that are open to us there, 303 00:17:08,800 --> 00:17:10,360 as investigators. 304 00:17:10,400 --> 00:17:11,400 Mmm. 305 00:17:11,440 --> 00:17:14,920 GRAHAM: They also came here for one specific purpose, 306 00:17:14,960 --> 00:17:16,840 that's what it would appear. 307 00:17:16,880 --> 00:17:20,760 They came here simply to dispose of Corinna 308 00:17:20,800 --> 00:17:22,200 and they knew how to do it. 309 00:17:23,600 --> 00:17:25,480 It's believed the weapon used 310 00:17:25,520 --> 00:17:28,960 was a relatively silent 22-calibre pistol, 311 00:17:29,000 --> 00:17:34,120 using short-range low velocity rimfire ammunition. 312 00:17:34,160 --> 00:17:36,560 Bullets, says Alex Krstic, 313 00:17:36,600 --> 00:17:40,800 fired from a professional assassin's weapon of choice. 314 00:17:41,840 --> 00:17:43,360 Absolute pros. 315 00:17:43,400 --> 00:17:45,160 There are some military organisations 316 00:17:45,200 --> 00:17:48,560 where their professional people use 22-rimfire rounds, 317 00:17:48,600 --> 00:17:50,520 like the Mossad and places like that. 318 00:17:50,560 --> 00:17:54,040 So, whoever did this was confident that they could deliver the bullets 319 00:17:54,080 --> 00:17:57,600 to where they needed to be, efficiently and effectively. 320 00:17:58,880 --> 00:18:02,600 Corinna's position and the bullet casing found on the bed also 321 00:18:02,640 --> 00:18:06,560 provides Alex with critical clues about how the murder 322 00:18:06,600 --> 00:18:08,520 was carried out. 323 00:18:08,560 --> 00:18:12,760 And for that shell to be here, mean anything? 324 00:18:12,800 --> 00:18:14,760 Well, it indicates that the shooter 325 00:18:14,800 --> 00:18:18,600 was probably towards that end of the bed. 326 00:18:19,600 --> 00:18:21,760 And as the weapon's fired and ejected the case, 327 00:18:21,800 --> 00:18:25,080 the cartridge case has landed on the bed. 328 00:18:25,120 --> 00:18:29,800 Based on what I see, she was more likely than not facing the door 329 00:18:29,840 --> 00:18:31,360 or that end of the room... 330 00:18:31,400 --> 00:18:33,000 To fall back onto the bed. 331 00:18:33,040 --> 00:18:35,200 And on being shot has fallen back. 332 00:18:38,200 --> 00:18:40,560 So, it was a hit. So, it was an out and out hit. 333 00:18:42,960 --> 00:18:46,080 There's no sign of a struggle, there's no sign of theft. 334 00:18:46,120 --> 00:18:48,360 Clues that Corinna Marr... 335 00:18:48,400 --> 00:18:49,440 She was shot front-on, 336 00:18:49,480 --> 00:18:52,480 which indicates to me that she was looking at the shooter. 337 00:18:52,520 --> 00:18:54,600 ..most likely knew her killer. 338 00:18:55,800 --> 00:18:59,280 Anyone that's at a murder scene early in the piece 339 00:18:59,320 --> 00:19:00,800 becomes a suspect. 340 00:19:01,440 --> 00:19:04,080 That's next on Under Investigation. 341 00:19:14,920 --> 00:19:16,920 LIZ HAYES: Tonight we're investigating 342 00:19:16,960 --> 00:19:20,720 the troubling murder of young wife and part-time model, 343 00:19:20,760 --> 00:19:23,000 25-year-old Corinna Marr. 344 00:19:25,240 --> 00:19:27,120 She's left work early 345 00:19:27,160 --> 00:19:31,080 to change for a promotional event she's been booked to do that night. 346 00:19:32,240 --> 00:19:34,200 ALEX KRSTIC: She was caught unawares and she was executed. 347 00:19:34,240 --> 00:19:35,520 (MUFFLED GUNSHOT) 348 00:19:35,560 --> 00:19:37,680 It was an out and out hit. (MUFFLED GUNSHOT) 349 00:19:37,720 --> 00:19:40,360 Her body is found laying on the bed, 350 00:19:40,400 --> 00:19:42,000 a bullet to the head, 351 00:19:42,040 --> 00:19:44,920 another to her chest. 352 00:19:44,960 --> 00:19:48,720 So, she has not walked into a crime, she IS the crime. 353 00:19:48,760 --> 00:19:51,320 She's the reason they've come here. 354 00:19:51,360 --> 00:19:53,080 Whoever it is that did this... Whoever it is... 355 00:19:53,120 --> 00:19:54,760 ..came here to murder this woman 356 00:19:54,800 --> 00:19:58,880 and, whoever it was, was very, very good at doing it. 357 00:19:59,840 --> 00:20:06,080 Veteran detective Alex Krstic is in no doubt it was a professional hit. 358 00:20:06,120 --> 00:20:08,600 And his theory is the killer was 359 00:20:08,640 --> 00:20:11,520 in the company of someone Corinna knew. 360 00:20:11,560 --> 00:20:14,280 Killing people in a situation like this 361 00:20:14,320 --> 00:20:19,160 requires a very cold, calculating, skilled operator. 362 00:20:19,200 --> 00:20:21,960 Most of the murders that detectives get to see, 363 00:20:22,000 --> 00:20:23,640 or the vast majority of murders, 364 00:20:23,680 --> 00:20:25,680 there may be malice or forethought, 365 00:20:25,720 --> 00:20:28,680 but it's usually a fair bit messier than this. 366 00:20:28,720 --> 00:20:33,000 But you see, if someone is angry, 367 00:20:33,040 --> 00:20:35,280 they feel they have been betrayed, 368 00:20:35,320 --> 00:20:40,160 they feel like in some way Corinna has offended them, 369 00:20:40,200 --> 00:20:46,840 then usually they would enjoy the process of settling that score. 370 00:20:46,880 --> 00:20:52,640 In other words, they want their victim to feel some pain 371 00:20:52,680 --> 00:20:54,960 and feel some remorse. 372 00:20:55,000 --> 00:21:00,040 Whereas this was an act of just extinguishing a life. 373 00:21:02,360 --> 00:21:04,160 There's no sign of a struggle, 374 00:21:04,200 --> 00:21:06,560 there's no sign of theft. 375 00:21:06,600 --> 00:21:08,320 There's a lot of nothing. 376 00:21:08,360 --> 00:21:10,000 There's all sorts of things I find interesting 377 00:21:10,040 --> 00:21:11,440 in regards to this crime scene, 378 00:21:11,480 --> 00:21:12,920 and those things that you highlighted 379 00:21:12,960 --> 00:21:14,600 are very high on the menu. 380 00:21:14,640 --> 00:21:16,480 Normally in situations like this 381 00:21:16,520 --> 00:21:19,800 there is sign of some sort of struggle. 382 00:21:20,840 --> 00:21:22,640 Perhaps some sort of forced entry. 383 00:21:22,680 --> 00:21:26,920 Perhaps evidence from neighbours of loud noises and screaming 384 00:21:26,960 --> 00:21:29,080 and shouting, and all that sort of stuff. 385 00:21:29,120 --> 00:21:31,040 None of that happens. 386 00:21:32,000 --> 00:21:34,360 It most probably means, says Alex, 387 00:21:34,400 --> 00:21:38,640 that Corinna willingly let her killers into the apartment. 388 00:21:39,680 --> 00:21:41,840 We've got a switched-on, smart young lady 389 00:21:41,880 --> 00:21:43,320 that's getting ready for work. 390 00:21:43,360 --> 00:21:46,400 She wouldn't normally let anybody into the house. 391 00:21:46,440 --> 00:21:51,720 If she was apprehensive about anything untoward occurring 392 00:21:51,760 --> 00:21:54,760 she would have raised an alarm of some sort 393 00:21:54,800 --> 00:21:58,000 or provided some sort of defence. 394 00:21:59,320 --> 00:22:01,600 But once inside, Corinna would have 395 00:22:01,640 --> 00:22:04,880 quickly realised why her visitors were there. 396 00:22:05,480 --> 00:22:08,800 To commit a murder, you really need to dislike someone. 397 00:22:08,840 --> 00:22:11,360 You know, there's a motive. 398 00:22:11,400 --> 00:22:13,080 You don't kill somebody for no reason. 399 00:22:13,120 --> 00:22:17,680 Whoever killed Corinna either disliked her 400 00:22:17,720 --> 00:22:22,240 or was in cahoots with somebody that disliked her. 401 00:22:23,080 --> 00:22:27,760 And the manner in which Corinna was shot convinces Alex of his scenario. 402 00:22:27,800 --> 00:22:31,160 It was someone she knew, to gain access, 403 00:22:31,200 --> 00:22:34,240 with a professional killer to commit the murder. 404 00:22:35,160 --> 00:22:37,920 She wasn't trying to escape. She was shot front-on. 405 00:22:37,960 --> 00:22:39,160 Right? 406 00:22:39,200 --> 00:22:42,680 Which indicates to me that she was looking at the shooter 407 00:22:42,720 --> 00:22:44,800 or somebody near the shooter at the time. 408 00:22:46,080 --> 00:22:48,160 If that person pulled a pistol 409 00:22:48,200 --> 00:22:50,200 and fired the first round into her head, 410 00:22:50,240 --> 00:22:51,560 it would have come as a surprise. 411 00:22:51,600 --> 00:22:53,080 The gun comes up, it fires, 412 00:22:54,080 --> 00:22:55,120 she falls over, 413 00:22:55,160 --> 00:22:56,640 another round hits her in the chest, 414 00:22:56,680 --> 00:22:58,280 and whoever it is leaves. 415 00:22:59,400 --> 00:23:00,880 But, according to Alex, 416 00:23:00,920 --> 00:23:04,520 establishing the identity of the killer or killers 417 00:23:04,560 --> 00:23:08,880 is made all the more difficult because police seemingly 418 00:23:08,920 --> 00:23:13,040 failed to observe strict crime scene protocols. 419 00:23:13,080 --> 00:23:15,440 The crime scene is sacrosanct. 420 00:23:15,480 --> 00:23:18,560 Nobody goes into the crime scene. Nobody goes in, nobody comes out. 421 00:23:18,600 --> 00:23:22,960 It seems that perhaps that didn't occur on this occasion. 422 00:23:24,200 --> 00:23:26,000 The bedroom is apparently 423 00:23:26,040 --> 00:23:29,400 not protected against cross contamination 424 00:23:29,440 --> 00:23:31,320 nor is Robert Marr. 425 00:23:32,120 --> 00:23:36,000 His face left bloodied after attempting to revive Corinna. 426 00:23:37,320 --> 00:23:39,080 ALEX: You've got him at the scene. 427 00:23:39,120 --> 00:23:44,040 He's got what appears to be blood on his face and on his hands. 428 00:23:44,080 --> 00:23:47,720 You've got him walking in and out of the crime scene. 429 00:23:48,680 --> 00:23:50,600 COLIN: He was allowed to wash. 430 00:23:51,720 --> 00:23:55,120 When I saw him, I was standing near the police car 431 00:23:55,160 --> 00:23:57,120 viewing down the drive. 432 00:23:57,160 --> 00:24:03,760 And then he walked with the uniformed officer 433 00:24:03,800 --> 00:24:07,560 down towards the carport at the back of the units, 434 00:24:07,600 --> 00:24:12,000 and he was allowed to wash, wash his hands and his face. 435 00:24:12,840 --> 00:24:15,360 Colin Todd was at the scene because he was 436 00:24:15,400 --> 00:24:20,080 to take Corinna to her promotional job later that afternoon. 437 00:24:21,160 --> 00:24:23,760 It was while driving to her apartment, Colin says, 438 00:24:23,800 --> 00:24:28,920 he learns Corinna has been killed, from her husband Robert. 439 00:24:29,720 --> 00:24:31,840 You call her to tell her you're running late. 440 00:24:31,880 --> 00:24:34,360 COLIN: Yes. And Robert answered the phone. 441 00:24:34,400 --> 00:24:37,560 And I said to him, "Can I talk to Corinna, I'm running late." 442 00:24:38,440 --> 00:24:40,720 And he said, "She's dead. 443 00:24:40,760 --> 00:24:43,480 "She's been shot. What the fuck have you done?" 444 00:24:45,720 --> 00:24:48,240 Police seek out possible suspects. 445 00:24:49,000 --> 00:24:51,680 Both Robert Marr and Colin Todd 446 00:24:51,720 --> 00:24:54,480 are on the list of potential perpetrators. 447 00:24:55,240 --> 00:24:58,040 Colin, you were one. That's right. 448 00:24:59,080 --> 00:25:01,200 I arrived at the scene 449 00:25:01,240 --> 00:25:07,040 and I knew that anyone that's at a murder scene early in the piece 450 00:25:07,080 --> 00:25:08,960 becomes a suspect. 451 00:25:09,000 --> 00:25:11,640 You know, you've got to put yourself in that boat. 452 00:25:11,680 --> 00:25:14,200 Did you declare why you were there? 453 00:25:14,240 --> 00:25:16,160 I walked over to the police car 454 00:25:16,200 --> 00:25:20,600 and said, "Look, you know, I've arrived to pick Corinna up." 455 00:25:20,640 --> 00:25:22,400 And he said, "Who are you?" 456 00:25:22,440 --> 00:25:26,440 Colin is interviewed by police later that afternoon. 457 00:25:26,480 --> 00:25:30,200 They did hammer me and pressured me quite heavily, 458 00:25:30,240 --> 00:25:33,640 and virtually accused me of doing the crime. 459 00:25:34,560 --> 00:25:37,840 I have to ask you, did you kill Corinna Marr? 460 00:25:37,880 --> 00:25:39,240 No, I didn't. 461 00:25:39,280 --> 00:25:44,000 You didn't have any motive to be angry... 462 00:25:44,040 --> 00:25:46,160 No. No. No. ..or resentful or... 463 00:25:46,200 --> 00:25:51,400 I was giving her advice as a friend, a close friend, 464 00:25:51,440 --> 00:25:54,840 in regards to affairs with other people. 465 00:25:54,880 --> 00:25:59,520 "You're doing situations too close to home 466 00:25:59,560 --> 00:26:01,440 "with people you shouldn't be." 467 00:26:02,400 --> 00:26:07,000 Colin advised police of these affairs he believed Corinna was 468 00:26:07,040 --> 00:26:11,000 involved in while himself under interrogation. 469 00:26:11,040 --> 00:26:16,920 It was some months later that he was finally eliminated as a suspect. 470 00:26:16,960 --> 00:26:19,680 GRAHAM: Can I ask this question, Colin? 471 00:26:19,720 --> 00:26:22,600 Did Robert suspect 472 00:26:22,640 --> 00:26:27,840 or know that Corinna had been disloyal? 473 00:26:28,880 --> 00:26:30,040 That... 474 00:26:31,560 --> 00:26:35,320 It's a hard one to answer because I only spoke to Corinna 475 00:26:35,360 --> 00:26:37,880 and what Corinna told me. 476 00:26:37,920 --> 00:26:41,160 But I suspect he would have had to have known 477 00:26:41,200 --> 00:26:43,480 that things were occurring. 478 00:26:47,480 --> 00:26:51,680 Robert Marr is shocked and bewildered by his wife's murder. 479 00:26:51,720 --> 00:26:56,280 I can't believe that they could look into Corinna's eyes, 480 00:26:56,320 --> 00:26:58,880 into her face, 481 00:26:59,960 --> 00:27:04,200 and be able to do something as devastating and as final as this. 482 00:27:04,920 --> 00:27:07,320 But he is also a suspect. 483 00:27:08,360 --> 00:27:11,720 He is interviewed by police twice that day, 484 00:27:11,760 --> 00:27:13,600 once at the scene, 485 00:27:13,640 --> 00:27:16,200 then again in the evening at the police station. 486 00:27:16,240 --> 00:27:20,360 His father, a police chaplain, by his side. 487 00:27:21,440 --> 00:27:26,640 A focus is whether he is resentful of Corinna's work as a model. 488 00:27:26,680 --> 00:27:28,440 But he denies any suggestion 489 00:27:28,480 --> 00:27:32,480 he is jealous of the attention she received from men. 490 00:27:46,080 --> 00:27:51,680 Robert Marr in his statement said that he was very proud of his wife, 491 00:27:51,720 --> 00:27:54,920 saying "It was always good to tell mates your wife's a model." 492 00:27:54,960 --> 00:27:57,920 He said it was actually "a bragging right". 493 00:27:57,960 --> 00:28:01,320 In other words, he was not suggesting for a minute he resented 494 00:28:01,360 --> 00:28:05,400 this beautiful wife, in fact he likes to brag about her, he says. 495 00:28:05,440 --> 00:28:06,640 Well, he may well be doing that 496 00:28:06,680 --> 00:28:09,560 but sometimes people say things that they don't mean, 497 00:28:09,600 --> 00:28:11,760 so there's a lot of things that are mixed in here. 498 00:28:13,600 --> 00:28:15,640 A stunning revelation. 499 00:28:15,680 --> 00:28:17,600 GRAHAM: So, there was something in there 500 00:28:17,640 --> 00:28:19,840 sufficient to convince the judges 501 00:28:19,880 --> 00:28:23,320 that this man was potentially a suspect. 502 00:28:23,360 --> 00:28:26,440 The secret the police are keeping. 503 00:28:26,480 --> 00:28:29,360 There's something going on that we don't know about. 504 00:28:29,400 --> 00:28:31,800 That's next on Under Investigation. 505 00:28:41,280 --> 00:28:45,000 MAN: In a quiet, middle-class unit, 506 00:28:45,040 --> 00:28:48,320 a beautiful young woman is literally executed. 507 00:28:48,360 --> 00:28:52,240 LIZ HAYES: The killing of Corinna Marr in 1997 508 00:28:52,280 --> 00:28:57,360 is still one of Australia's most troubling unsolved crimes. 509 00:28:57,400 --> 00:29:01,320 We still don't know who and we certainly don't know why. 510 00:29:01,360 --> 00:29:07,040 Corinna's husband Robert Marr is quickly eliminated as a suspect. 511 00:29:07,080 --> 00:29:12,000 Colin Todd, Corinna's boss, will also be ruled out, 512 00:29:12,040 --> 00:29:14,880 but only after a lengthy investigation. 513 00:29:14,920 --> 00:29:17,880 I have to ask you, did you kill Corinna Marr? 514 00:29:17,920 --> 00:29:19,280 No, I didn't. 515 00:29:19,320 --> 00:29:24,200 This was a murder that was seemingly swift and precise. 516 00:29:24,240 --> 00:29:25,840 (MUFFLED GUNSHOTS) 517 00:29:26,600 --> 00:29:28,480 ALEX KRSTIC: There's no doubt that this was a hit 518 00:29:28,520 --> 00:29:30,680 carried out by a professional killer. 519 00:29:30,720 --> 00:29:35,160 But who would want Corinna dead? And why? 520 00:29:35,200 --> 00:29:38,240 It's a mystery that only grows 521 00:29:38,280 --> 00:29:43,960 because we have also learnt police are keeping secrets about the case. 522 00:29:44,000 --> 00:29:48,720 A confidential file they're still refusing to open. 523 00:29:48,760 --> 00:29:51,880 It's this withholding of information, Alex. 524 00:29:51,920 --> 00:29:55,840 I'm not sure what's in the public interest and what's not here. 525 00:29:55,880 --> 00:29:59,400 The reason for the withholding of information is unclear. 526 00:30:00,480 --> 00:30:04,400 There's clearly a number of people of interest here. 527 00:30:05,880 --> 00:30:11,240 The first indication there were police secrets was in 2002, 528 00:30:11,280 --> 00:30:14,040 five years after Corinna's murder... 529 00:30:14,080 --> 00:30:15,920 REPORTER: Police say, while they have a few suspects, 530 00:30:15,960 --> 00:30:20,280 this western suburbs man is still firmly in their sights. 531 00:30:20,320 --> 00:30:23,440 ..when Derick Sands, a local newspaper photographer, 532 00:30:23,480 --> 00:30:27,200 who was allegedly having an affair with Corinna, 533 00:30:27,240 --> 00:30:31,360 comes into the frame as a person of interest. 534 00:30:31,400 --> 00:30:34,280 He gave his first interview to police 535 00:30:34,320 --> 00:30:36,000 only a week after the murder. 536 00:30:36,040 --> 00:30:41,560 Graham Archer, veteran television news journalist then at Channel 7, 537 00:30:41,600 --> 00:30:44,920 reports that Sands is in police sights. 538 00:30:44,960 --> 00:30:50,280 That was the allegation that he was a suspect in a murder case. 539 00:30:51,120 --> 00:30:53,680 Sands sues Channel 7 540 00:30:53,720 --> 00:30:58,440 and later South Australian Police, for defamation. 541 00:30:58,480 --> 00:31:04,520 Those court proceedings would reveal police were keeping secrets. 542 00:31:04,560 --> 00:31:07,960 MAN: Liz, I was not able to cross-examine 543 00:31:08,000 --> 00:31:10,920 any of these police investigators. 544 00:31:12,080 --> 00:31:15,400 Adelaide barrister, Paul Hayward-Smith KC, 545 00:31:15,440 --> 00:31:18,600 represented Derick Sands. 546 00:31:18,640 --> 00:31:21,920 The case he ran for his client was hampered, he says, 547 00:31:21,960 --> 00:31:27,520 because investigators didn't have to answer a number of questions. 548 00:31:28,240 --> 00:31:31,360 Police claimed immunity, saying their 549 00:31:31,400 --> 00:31:36,200 information should not be revealed to the public, including Sands. 550 00:31:37,120 --> 00:31:39,400 They said it was public interest immunity. 551 00:31:39,440 --> 00:31:45,280 Now, this was a person who was not able to properly advance his case. 552 00:31:45,320 --> 00:31:49,640 ALEX: The reason for the withholding of information is unclear. 553 00:31:50,600 --> 00:31:53,080 There's something going on that we don't know about 554 00:31:53,120 --> 00:31:55,800 and the police have dug their heels in 555 00:31:55,840 --> 00:31:57,560 about passing this information on. 556 00:31:59,680 --> 00:32:03,280 So, what is in the secret police file? 557 00:32:04,080 --> 00:32:08,560 From the little disclosed in the Derick Sands case, our experts 558 00:32:08,600 --> 00:32:12,240 believe it is critical information 559 00:32:12,280 --> 00:32:15,520 and potentially explosive for police. 560 00:32:16,320 --> 00:32:19,160 But we can reveal the secrets include 561 00:32:19,200 --> 00:32:24,080 evidence handed to investigators days after the murder 562 00:32:24,120 --> 00:32:29,000 which could provide vital clues to the killer's identity. 563 00:32:29,040 --> 00:32:32,800 And there is also the suppression of other evidence, 564 00:32:32,840 --> 00:32:38,320 some of which might expose failures by instigating offices. 565 00:32:38,360 --> 00:32:41,440 Yet the secrecy continues. 566 00:32:41,480 --> 00:32:43,160 South Australian Police 567 00:32:43,200 --> 00:32:47,440 refused to answer any of the questions we put to them. 568 00:32:48,440 --> 00:32:51,280 I happen to know, speaking to senior police, 569 00:32:51,320 --> 00:32:55,360 that they actually are concerned about this case. 570 00:32:55,400 --> 00:33:00,760 But when I asked whether the public- interest immunity would be lifted 571 00:33:00,800 --> 00:33:03,600 they said, "That will never happen." 572 00:33:04,520 --> 00:33:06,440 Did they say why? 573 00:33:06,480 --> 00:33:12,600 They said, "It's an internal matter and it won't happen." 574 00:33:12,640 --> 00:33:14,560 All the more reason for it to happen. 575 00:33:15,160 --> 00:33:18,800 As for Derick Sands, the man whose defamation action 576 00:33:18,840 --> 00:33:24,920 revealed police were keeping secrets, it was an unhappy time. 577 00:33:24,960 --> 00:33:29,320 He lost both cases against the police and Channel 7. 578 00:33:29,360 --> 00:33:31,120 But he was never charged 579 00:33:31,160 --> 00:33:36,080 even though he proved to be unimpressive in the witness stand. 580 00:33:36,120 --> 00:33:43,080 The guy was not credible and that's how the judge found him in our case. 581 00:33:44,040 --> 00:33:46,240 Now, having said all that, I don't 582 00:33:46,280 --> 00:33:52,040 actually think that Derick Sands committed this crime. 583 00:33:53,040 --> 00:33:56,320 There's nothing that ties him to the scene. 584 00:33:58,080 --> 00:33:59,760 No witnesses. 585 00:33:59,800 --> 00:34:01,960 PAUL: He had no motive, 586 00:34:02,000 --> 00:34:07,440 and no-one placed him anywhere in the vicinity of that unit that day. 587 00:34:08,440 --> 00:34:13,040 And Colin Todd, another suspect in the case, agrees. 588 00:34:13,080 --> 00:34:17,160 He arranged to speak with Derick Sands in his own bid 589 00:34:17,200 --> 00:34:18,480 to seek the truth. 590 00:34:19,280 --> 00:34:21,880 COLIN: We met at the Tea Tree Gully hotel. 591 00:34:21,920 --> 00:34:23,720 I arranged the meeting. 592 00:34:24,880 --> 00:34:26,360 Two suspects meeting. 593 00:34:26,400 --> 00:34:30,320 I was a suspect, Derick Sands was a suspect, yes. 594 00:34:30,360 --> 00:34:33,280 Did you ask if he had murdered Corinna? 595 00:34:33,320 --> 00:34:39,000 Yes. At the Tea Tree Gully hotel, I asked him straight out. 596 00:34:39,040 --> 00:34:43,880 I looked at his face and said, "Did you kill Corinna?" 597 00:34:43,920 --> 00:34:47,280 And I stared into his eyes. 598 00:34:47,960 --> 00:34:51,760 There was no dilation, movement of his eyes, 599 00:34:51,800 --> 00:34:53,280 and I believed him. 600 00:34:53,840 --> 00:34:54,880 Alex. 601 00:34:54,920 --> 00:34:57,560 ALEX: The thing is, based on the material that I've seen, 602 00:34:57,600 --> 00:35:02,960 I can't see a nexus between him and the killing of Corinna. 603 00:35:03,000 --> 00:35:05,800 Well, it seems to me after all these years, 604 00:35:05,840 --> 00:35:09,760 we are no further advanced on seeing anybody charged, 605 00:35:09,800 --> 00:35:13,000 any of the suspects, whether it be Colin sitting here with us, 606 00:35:13,040 --> 00:35:14,440 whether it be Derick Sands, 607 00:35:14,480 --> 00:35:16,080 whether it be Robert Marr, 608 00:35:16,120 --> 00:35:17,560 or anyone else. 609 00:35:17,600 --> 00:35:19,480 No-one's been charged. 610 00:35:19,520 --> 00:35:25,440 At what point do we decide it's time to lift the lid? 611 00:35:25,480 --> 00:35:27,600 I reckon we probably... We've got to do something. 612 00:35:27,640 --> 00:35:30,360 ..passed that point a long time ago. 613 00:35:32,400 --> 00:35:36,040 Will there finally be answers for Corinna's family? 614 00:35:36,080 --> 00:35:38,480 We just want to know. 615 00:35:38,520 --> 00:35:43,120 Twenty-six years of, you know, loss. 616 00:35:43,160 --> 00:35:45,560 Where would she be today? 617 00:35:46,640 --> 00:35:48,920 That's next on Under Investigation. 618 00:35:58,560 --> 00:36:00,800 LIZ HAYES: Tonight we've investigated 619 00:36:00,840 --> 00:36:05,040 one of the strangest murder cases in Australian criminal history. 620 00:36:08,000 --> 00:36:12,000 Corinna Marr, a young wife, real estate agent, 621 00:36:12,040 --> 00:36:13,560 and part-time model, 622 00:36:13,600 --> 00:36:16,840 executed in her suburban unit. 623 00:36:16,880 --> 00:36:21,480 The crime having all the hallmarks of a highly professional hit. 624 00:36:21,520 --> 00:36:23,280 GRAHAM ARCHER: The person who did this 625 00:36:23,320 --> 00:36:27,040 was clearly on a mission to murder. 626 00:36:27,080 --> 00:36:28,920 But, as we've revealed, 627 00:36:28,960 --> 00:36:31,920 there are secrets South Australian Police have been keeping 628 00:36:31,960 --> 00:36:36,320 for the past 27 years, confidential 629 00:36:36,360 --> 00:36:42,080 information that potentially could today help solve the case. 630 00:36:43,280 --> 00:36:45,200 Perhaps about a motive, 631 00:36:45,240 --> 00:36:49,160 or even the murderer, a suspected hitman. 632 00:36:49,960 --> 00:36:53,280 The police have dug their heels in about passing this information on. 633 00:36:53,320 --> 00:36:58,240 All still curiously protected by immunity 634 00:36:58,280 --> 00:37:02,320 because it's information not considered in the public interest. 635 00:37:03,320 --> 00:37:07,800 Look, I think the problem here is that this is a murder 636 00:37:07,840 --> 00:37:11,600 that's cloaked in official secrecy, 637 00:37:11,640 --> 00:37:16,360 and it seems to me, Alex, that clarity is required desperately. 638 00:37:16,400 --> 00:37:18,160 There needs to be a lot of clarity here, I think. 639 00:37:18,200 --> 00:37:20,400 This young woman deserves justice. 640 00:37:20,440 --> 00:37:21,680 Yeah. I agree. 641 00:37:21,720 --> 00:37:22,880 She's laying in her grave 642 00:37:22,920 --> 00:37:25,680 with a question mark over what's going on 643 00:37:25,720 --> 00:37:30,760 and the public demands that there be a professional investigation 644 00:37:30,800 --> 00:37:33,520 carried as far as it possibility can, 645 00:37:33,560 --> 00:37:35,800 to establish exactly what happened. 646 00:37:37,680 --> 00:37:43,520 Our experts say, in a crime unsolved for over a quarter of a century, 647 00:37:43,560 --> 00:37:47,000 the time for secrecy is over. 648 00:37:47,040 --> 00:37:50,280 MAN: We're now 27 years after the murder 649 00:37:50,320 --> 00:37:53,880 so in my view there is no prospect 650 00:37:53,920 --> 00:37:57,320 unless someone comes forward and confesses, for any trial. 651 00:37:57,360 --> 00:37:59,760 So, in my view, there is no basis 652 00:37:59,800 --> 00:38:02,760 for public interest immunity anymore. 653 00:38:03,720 --> 00:38:07,640 No-one has more of a stake in breaking the secrecy 654 00:38:07,680 --> 00:38:11,200 and perhaps finally getting answers 655 00:38:11,240 --> 00:38:14,200 than Corinna's dad, Trevor King. 656 00:38:14,240 --> 00:38:19,480 He has never forgotten that terrible day when his daughter was murdered. 657 00:38:19,520 --> 00:38:22,040 # I am holding my breath... # 658 00:38:22,080 --> 00:38:25,320 I was only about a kilometre away 659 00:38:26,040 --> 00:38:30,320 repairing a window when it happened. 660 00:38:30,360 --> 00:38:33,720 The terrible pain he felt when he arrived at the scene... 661 00:38:36,080 --> 00:38:38,120 ..is still with him today. 662 00:38:38,720 --> 00:38:44,800 It's one of those things. You never really believe what has happened. 663 00:38:44,840 --> 00:38:47,360 It's all like a nightmare. 664 00:38:48,280 --> 00:38:50,680 Why would someone want to kill Corinna? 665 00:38:52,000 --> 00:38:54,080 We just want to know. 666 00:38:54,120 --> 00:38:58,600 Twenty-six years of, you know, loss. 667 00:38:58,640 --> 00:39:00,280 You know. 668 00:39:00,320 --> 00:39:02,200 Where would she be today? 669 00:39:02,240 --> 00:39:04,520 Would she have had children? 670 00:39:04,560 --> 00:39:09,960 Would she have given us grandchildren to love and cherish? 671 00:39:11,440 --> 00:39:13,360 We don't know. 672 00:39:13,400 --> 00:39:19,400 You go to bed crying of a night, wondering what would have happened. 673 00:39:20,760 --> 00:39:22,400 Why did it happen? 674 00:39:22,440 --> 00:39:26,240 Man. I keep going, why? Who? 675 00:39:27,560 --> 00:39:32,040 That's all I can do 'cause no-one knows. 676 00:39:34,200 --> 00:39:37,880 Graham, what is going to crack this case? What do we need to do? 677 00:39:37,920 --> 00:39:42,960 Well, I think probably a judicial inquiry of some kind 678 00:39:43,000 --> 00:39:49,000 without a local judge is probably in order. 679 00:39:49,040 --> 00:39:53,200 And I think the parents of Corinna Marr need something. 680 00:39:53,240 --> 00:39:57,960 I think they're entitled to have some of these questions answered. 681 00:39:58,000 --> 00:40:00,760 I would have had fresh eyes look at the entire file. 682 00:40:00,800 --> 00:40:03,280 With all due respect to the South Australian Police, 683 00:40:03,320 --> 00:40:06,720 I would have had investigators from other jurisdictions come in 684 00:40:06,760 --> 00:40:09,160 and look at the investigation and review it. 685 00:40:09,200 --> 00:40:12,240 Review it independently and review it properly. 686 00:40:13,600 --> 00:40:15,840 Of the many cases we've investigated, the 687 00:40:15,880 --> 00:40:21,160 murder of Corinna Marr raises some of the most troubling questions. 688 00:40:21,760 --> 00:40:24,480 The only way forward, our experts believe, 689 00:40:24,520 --> 00:40:27,800 is with an independent inquiry. 690 00:40:28,600 --> 00:40:33,120 The only way Corinna's family might finally get some answers. 691 00:40:34,280 --> 00:40:38,400 Police are offering a reward of $200,000 for information 692 00:40:38,440 --> 00:40:41,840 that leads to the conviction of Corinna Marr's murderer. 693 00:40:41,880 --> 00:40:47,800 If you know anything we ask you to please call Crimestoppers on: 694 00:40:50,000 --> 00:40:53,080 Or contact us on our confidential email: 695 00:40:56,320 --> 00:40:58,440 Thank you all, very much for joining me. 696 00:40:58,480 --> 00:40:59,800 Thank you. 697 00:40:59,840 --> 00:41:01,040 And I thank you. 698 00:41:01,080 --> 00:41:02,920 I'm Liz Hayes, good night. 699 00:41:02,960 --> 00:41:04,960 Captioned by AI-Media ai-media.tv