FBI TRUE

Hi, guys. I hope you guys like my new hair.

- Chyenne Kircher, a missing 14 year old girl from East Dubuque.

Family had found a note inside of the car.

- The note was confirmed to be written by Chyenne.

- We found a YouTube video where this man comes into the room.

I think we all strongly believed was her stepdad.

- I thought there was a sexual relationship.

I didn't believe him.

- We really believed he was just screwing with us.

And he walks us up

this steep wooded embankment behind the house.

We filmed everything.

- All these leads, all the things

that we ran down as a team.

What happened?

In the FBI we make a lot of headlines.

Drug busts, mob stings,

terrorist takedowns.

We understand why people want to tell stories about us.

- Mark it. - Freeze!

- FBI. - FBI!

But they don't know the half of it.

What really goes down?

We save that for each other,

when we're talking agent to agent.

This is FBI True.

Cheyenne Kircher goes missing.

14 year old girl from East Dubuque, Illinois.

We have dozens of these types of cases throughout the year

where children run away.

Dubuque, Iowa is a large city across the river

from East Dubuque.

- We had covered all the leads, talked to all of our contacts

that Cheyenne had made online.

And so now we were kind of pivoting

and looking at everyone that was in close proximity to her.

- Lori Lyons, her mother, passed her polygraph.

The older brother, Colorado, passed his polygraph.

- The polygrapher is interviewing Terry.

And then what do you get, a phone call?

A text message.

It's actually to get up here and then about probably

five or 10 seconds later, now.

- Generally, walking into an interview,

doing the types of cases I did up until that point,

I would have all my notes prepared.

I would have topics to discuss. I had none.

I was mainly a financial crimes investigator at that point.

I'd worked a few bank robberies and a couple of other things

and the reason I got selected, I think, was because I had always

expressed an interest in working missing people.

So walking into that room and not knowing anything

that was going to transpire

was a very nerve wracking feeling for me.

I remember being extremely nervous about it.

And I decided walking in, that I couldn't be prepared.

I'm just going to let him talk and then go from there.

- And our interview room is set up.

It's recorded. We have an observation room.

So there's a ton of us jammed in the observation room.

And Terry kind of lays out what happened with it

and how it went down.

- After all these interviews, all these leads,

all the things that we ran down as a team,

to all of a sudden just have that, like, here it is.

And I said, well I need more details. What happened?

- So his version of events were that she was running outside

and that she said, chase me. Chase me up the hill.

So he proceeded to chase her up the hill.

At that point he fell down,

slipped and fell somehow while he was chasing her,

and that she turned around and started laughing at him,

that somehow something must have snapped in him, that he didn't

like her laughing, and the next thing he knew,

he had blacked out and he's standing above her.

- It's all coming in so fast that I'm still trying

to process what's real, what's truthful,

what's not at this point.

So in my mind, I'm thinking, good...

It's terrible that something bad has happened,

but he is confessing to being responsible for her death.

So it's a good thing.

As for the blackout, I didn't believe it.

- We hear that blackout story a lot

when it comes to confessions.

You know, somebody will say, I blacked out when this happened.

It wasn't the truthful story at first,

but it was the truth he was prepared to give

at that moment with Wayne.

- So, Casey, what are you thinking?

You guys are in the observation room.

- Right. Totally freaking out. I mean, not expecting this.

- I don't know how exactly it all came to be, but somehow

he felt as though he could tell me his deepest, darkest secret.

- Why confess now? Was it the fear he knew he was busted?

- I think it was based on, a lot on the rapport

that Wayne had built with him.

I could tell that he really liked Wayne.

He really trusted him.

And that's really part of being able to interview people

and get them to tell us their secrets, or confess,

building rapport with them and making them feel safe enough

and not judged.

- So you never had a murder confession before obviously,

because you worked financial crimes

and this was your first murder confession.

- That's right. And what a confession it was.

- Me not ever having had somebody tell me something

like that before, I was very hurried to try to get to

where is she and would you take us there?

Because in my mind, we have our person.

We need to find her too. Where is she?

- I believed that Terry Abbas killed Chyenne at that point,

but I knew we needed to keep getting more details.