>> he was hitching a ride home and got picked up by a creepy guy. and the guy tried to make a pass at him. and russell jumped out of the moving car to get away from him. he said that he hit the guy in the leg with the knife. >> and then rolled out the car? >> and then rolled out of the car. >> no one disputes that on this trail sean viehweg killed russell jordan. what was left of him, his skeleton, was found right over there, not six feet off the path. but there are so many unanswered questions. why were they here in the first place? it was the middle of a school day, a 30-minute hike from campus. did they really come all this way just to play some sort of childish squeezing game? >> why do you think he did it? >> it's probably the ultimate thing that a human can do to another person, is to kill somebody. i mean once you kill somebody, that's like the most ultimate thing, rush, you can get. >> taten recalls that viehweg also had a disturbing reputation for sadistic behavior.