Dennis Rader (BTK killer)

His mother started dating a railroad detective when BTK was around 11 years old.

He will send us pictures of himself in four different locations, of where he's tied up to trees in practice autoerotic, where he's actually buried himself in a grave.

He would use those dolls to fantasize about what he did to victims.

We have Polaroids of him dressing up with his dolls and tying them up, taking pictures of himself and the dolls in a mirror.

I mean, that was part of his fantasy life.

Lieutenant Landwehr and Detective Kelly Otis arrived at the scene.

After looking over the box, more officers were called to the area.

He's playing with us.

He's taunting us, and that's what he's always done.

But we knew that in the long run, if we continue to let him do that, that we're going to catch him.

And that's the ultimate goal was, of course, put him in behind bars.

We're out here at the southeast corner of the parking lot at the Home Depot, and you see a row of vehicles here, and the next row over is where the employee had parked his truck.

The package was actually in the back end of his truck, and that's where he found it.

So there were hours of video on that day while he was working that had to be looked at in order to try to find anything that could be someone making a drop into his pickup truck.

What you're seeing on this particular screen is a black Jeep that's entering the picture there, which will travel across the top of the screen and park next to that vehicle.

An individual, it appears, gets out of the vehicle, the Jeep that parks next to the pickup truck, fools around outside of the vehicle and then gets back into the Jeep and leaves the same way he came in.

You're just staring.

I stared at that.

I must have watched that, I don't know how many times, just staring at him, saying, there he is.

Inside of it, it had a doll and some jewelry, and it also had a note inquiring whether or not he could communicate with the police by floppy disk without us being able to trace it.