[theme music playing]
[man] The thing inside of me, it's like...
the appetite.
It's like a wolf that's...
feeling the hunger.
Technology, technology, technology.
What jumped out at the investigators at that time
was her SIM card.
Rohrer's SIM card, or subscriber identity module, had been taken
out of her phone and placed into a phone owned by this man,
31-year-old Colby Delea Martin.
[woman] Van Buren County investigators say
they found him in a Wal-Mart parking lot.
So despite the fact that Martin has been called back in for
questioning, he doesn't ask authorities why he's being
taken into custody.
And yet, with a level of confidence and calm,
he sits down, and in this very glib,
superficially charming way, he says to the detectives,
"You tell me your story, and then we'll talk."
He's trying to take over the control of the interview,
and he's playing it very cool.
And that level of arrogance and overconfidence is also
something we see in psychopathic
individuals sometimes.
So he's been giving these sort of elliptical,
partial sentences, just driving, out of nowhere.
There's not a full continuity of ideas going on in the way
he's communicating.
And so he's being, what we say, it's evasion.
He's not communicating fully what his memory is
of something.
And what we know in research on verbal evasions, when people
are lying, is they will use these little qualifiers like
just, only -- something happened and they're not filling it in.
[officer] Mm-hmm.
[officer] Right.
What we see sometimes in psychopathic individuals is
a very high level of narcissism.
And in the case of Martin, where that narcissism leaks out
is his own arrogance that he thought he'd come up with
this unbelievable story that's implausible.
He'd just tell them it was an accident, and that'd be
the end of it.
He didn't even waste the time or brain power or energy to
think about, how do I explain why I moved a body?
[John] Colby Martin doesn't feel bad.
There's no evidence to suggest that he has any real negative,
vulnerable feelings at all.
He puts the tissue up to his face, but there are
no tears -- it's presentation.
It's all theatrics. It's all drama.
He's got to get these investigators on his side.
Colby is never considering the victim in this case.
He's never considering the husband that had to call
911 because his wife had just gone out for a walk like
she does every day and never came home.
[Charles] I don't think he's worried about any future suffering on
the part of his wife or their kid.
If he should go to jail, he's using it as bait.
It's an emotional lure.
It's supposed to get the police to feel
a little bit more sorry for him.
It's pure manipulation on his part.
He presents it as if he doesn't even know what a SIM card
actually is, but then later in the sequence, we see, well,
"I don't even have the push button to get," so he knows what
a SIM card actually is.
This is part of the narrative that he hadn't considered
because it really doesn't make any sense why he would have
this SIM card.
So he's trying to send up a test balloon to figure out,
can he get information from them in order to establish
the new lie that he needs to tell?
[officer] Yeah.
What we'd see potentially is somebody that in a very
manipulative and calculated way is trying to manage
the impression of the detectives.
That if he looks like he has insight, if he looks like he's
acknowledging that this doesn't look good for him and that it
makes him look like a disturbed human being, maybe they will
appreciate the parts of him that have been cooperative.
And he goes from that extreme of saying, "No, I didn't,"
to, "Yes, I did," about washing the car.
I think it's overall perhaps designed to elicit kind of
a frustrated response from the police.
Like, would you finally just tell us the truth?
Like, this is getting old. But they never take the bait.
I think it's a really telling line when he goes, "I wouldn't
want anyone to think that I did it on purpose."
It doesn't mean that he didn't do it on purpose.
He's just saying, "I don't want people to think
I did it on purpose."
And it's a line used to manipulate the police.
Instead of just coming clean and doing the right thing,
Martin now turns the tables on the detectives
and says that they're playing him.
We see this with psychopathic individuals, that part of
the smoke and mirrors tactic of trying to evade detection
or evade responsibility is to put it on everybody else.
Sometimes they blame the victim.
Sometimes they blame the system.
They suggest that evidence has been planted on them,
making outlandish and wild accusations that make
absolutely no sense.
It's the first time his face looks like it has a real expression.
He looks annoyed.
And I think that's because he did have sex with her.
So he is one of those people who would have sex
with someone who is dead.
But it's not part of his narrative.
And we know that people with psychopathy have feelings that
can be really powerfully enraged, angry, and violent.
When investigators looked at his phone, they found very
curious and concerning search engine pornography searches.
These kinds of things all suggest someone who has a very,
very deviant fantasy, sexual contact with
a dead body.
There's only so much that a fantasy can take before
you have to know what that actually feels like.
So now he decides that it's time to engage in the act.
My prayer is that the monster ball that brought
a wrecking ball to my amazing family
will never see freedom again.
I watched for almost two years an individual who showed
no emotion, compassion, or remorse to taking
someone's life.
It's never given me joy to impose a sentence of life in
prison without even the possibility of parole.
But in this case, it does give me an extraordinary sense
of relief.
We didn't raise you to be this kind of person.
Every parent's worst fear would before for their child
to turn into a depraved killer.