Maggie Rulli

On a cold winter night in 1997, police in a small city in Idaho have brought a young man to the station to help answer some questions.

His name is Chris Tapp.

He shifts around in his chair inside a spare interrogation room, propping a baseball cap on the knee of his faded blue jeans.

Chris is 20 years old.

The detective asks if he's comfortable and says he can leave anytime.

You're not under arrest.

You're not in trouble.

The detective seems to think Chris knows something about the death of a young woman he knew, the brutal murder of 18-year-old Angie Dodge, who'd been found stabbed and sexually assaulted in her apartment more than six months before.

Chris is confused about why police would want to talk to him.

But the detective doesn't appear to believe him.

He shifts gears, saying if Chris is lying, he's going to pay a heavy price.

He says things will only get worse if it turns out Chris is hiding something.

But if he cooperates and fesses up now, then maybe police can throw him a lifeline.

Chris thought he was here to help the police, but now he's starting to realize this might not be a friendly conversation.

He tries bargaining with the detective.

Chris has just said he's a scared little man.

He's also volunteered to take a lie detector test.

Soon, detectives will take him up on that offer.

And it will set him and others on a dark path.

A path they could never have predicted.