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I can't stop thinking about Charlie's story from the last episode.

You know, his weird visit to Lightpan, Texas, when a truckload of dudes and a cop car ran him out of town.

Yeah, that's like something out of a B movie.

Yeah, right, exactly.

Hearing about Charlie's experience in Leipan has got me a little nervous about showing up in the same place.

This is where Christopher Whiteley was killed just five years ago,

where it seems like nobody really bothered to find out who or what actually killed him.

Christopher's own mom, Kimberly, gave me this warning when I talked to her on the phone.

I'm just telling you, be careful going on that property. Okay, Grandpa just got out of prison on a 40-year murder set. That's the people he was staying with. That's the people he's family. My friend's grandpa. Yeah, her girlfriend's grandpa. A real nasty people. Nasty people. She says she's a witch and I believe that. White track. Anyway, I'm just telling you be careful when you go out there to talk to these people because they're fucking nuts.

That was Kimberly's boyfriend chiming in with the trash talk.

I hear what she's saying about the need to be careful, but we got to go.

And this may be a spoiler, but I'm just going to tell you anyway, We are about to find a firsthand witness who is going to share something the cops never found out.

And it is going to unlock one of the biggest secrets surrounding this case.

From Free Range Productions in association with the Dallas Morning News, this is season four of The Unforgotten KillSight.

I'm your host, Wes Ferguson, Kimberly and some of her family went out to the property near Leipan where it all happened.

They didn't believe the sheriff's theory about a mountain lion attack,

and they wanted to see what else they could find. We went out there with a gun, me and my boyfriend

...