and i'm thinking, okay, what does that mean? he said, what that means is i can't just let you go home. >> narrator: dolph bryan has since retired and declined our interview request. so did the sheriff's office and the district attorney's office. tyler and kristi are tried separately for joey fulgham's murder. kristi is convicted, never relenting from her story that tyler is the actual shooter. in 2004, 14-year-old tyler is prosecuted as an adult. >> did you for real do that, or are you just telling them that? >> we both did. >> what did y'all do. >> without the confession, there would not have been a case. when you look at the confession, it seems very compelling, especially when his mother comes in and he essentially agrees, yes, i did it. >> in july 2004, tyler is