This is Hidden Killers Live with Tony Bruske, Stacey Cole and Todd Michaels.

When investigators went into this and in these interrogations, you know, it feels like they're going in there trying to crack the nut, essentially.

Let's get to what we think we're going to get here.

And let me ask you this. When you're going

into interrogate someone, when you're going into trying to find what you want to, you know,

not necessarily you want to be the truth, but you're trying to get to the truth. I think that's

a big difference there, to the truth or want to get to what you believe is a truth. You have to go

and not necessarily knowing what the truth is if you don't truly know what this person is up to. How do you recognize

when there's nothing to crack in that nut when you're sitting there and you're asking questions?

Obviously people can sit there and they're going to be difficult and it can take a long time

in interrogation to get actual results and actual answers. But at what point do you go and what sort

of signs do you look for and say, this isn't our person? And what did they miss here in this

with these, the four guys that they were going after for all of that time. What were they missing here

in terms of the signs that they should have looked at and said, these aren't our guys?

It's hard to walk a mile in the shoes of the investigators at the time. Yeah. But the first

question I asked in all the espionage investigations I always did was what, you know, the first question you ask as an investigator is what would compel this individual that I think might have done it to do it.

And then in order to answer that question, you start looking at the behavior arc, you know, so tell me where they grew up, tell me about the home life, tell me about the upbringing,

tell me about if they have healthy, happy relationships in their lives or they don't have healthy,

happy relationships in life. The fact that these people were friends, oh, that's a shot against

them being the ones that did it, because it's kind of unusual. So I'm always looking at that behavior

arc because if all of a sudden, because we do

this all time, if these four individuals don't have a background and a history of escalating

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