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Hello and welcome to a real crime profile.

This is Jim Clemente, former New York City prosecutor, retired FBI profiler and current writer and producer on CBS's Criminal Minds.

And with me today is...

Laura Richards, Criminal Behavioral Analyst, Formula of New Scotland Yard, and Founder and Director of Paladin, National Stalking Advocacy Service.

And Lisa Zambetti, I'm the casting director for Criminal Minds and Beyond Borders, and I have a real interest in real crime and the minds that solve those crimes and the families affected by those crimes.

So we're back again with another installment of our discussion about the colonial parkway murders.

And with us is Bill Thomas, the brother of Kathleen Thomas, who was murdered on October 12, 1986.

Thank you for coming back, Bill.

Oh, it's great to be here. Thank you.

I want to talk a little bit about the actual circumstances, sort of a crime scene reconstruction, if you will, about the actual homicides.

To me, it's a significant point whether someone, if they are strangling someone or slitting their throat, whether that is done from the front or the back of the person, the victim.

It seems to me that if they were being strangled from behind, that it would be very difficult to have left a piece of rope behind your sister's neck.

In other words, you could either do it by holding a piece of rope in both hands and pulling and crossing it behind the neck or wrapping a rope around with a slip knot and putting pressure from behind.

But I don't know how that would result in a piece of rope being left behind your sister's neck, if somebody then from behind slitter throat from beyond year to year.

It seems to me that if the person was behind her when they slitter throat and that piece of rope was still behind her neck, they would have seen that and taken it with them because they took the rest of the rope, right?

I agree with what you're saying, Jim, all I can tell you is my sister's brain are hair a little bit longer than and so it extended kind of down, well past her neck. I don't know if they might not have seen it.

But what I'm saying is if they were actually holding that rope with one hand, let's say, and slitting throat from behind, if they were behind and holding that rope around her neck and then slitting her throat from behind, the part of rope that was in her hand would have been the part behind her neck.

It seems to me that they would have had to have been in front of her and the rope was around her neck and they must have been applying the pressure from the front and then slitting her throat, cutting two ends of that rope and leaving a piece behind her neck.

I don't think that could be accomplished from behind her neck.

No, I'm not disagreeing with you. I've always said the sense that they were likely unconscious after being strangled in other words, whether they were, whether they actually died at that point or not.

Well, there might not have been conscious or moving.

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