and it's very hard to deal with, that he was that close. >> jessie roach's parents find small consolatione was the victim who tripped up hall. >> if something good could possibly come out of losing jessie, it's the fact that he's in prison and he will never get released. >> hall remains in federal prison with no possibility of parole. he's since made more murder confessions to reporters, and investigators. >> i sincerely believe that there are young girls out there somewhere who are alive today because larry hall is in prison. >> do you think he killed before? >> i think he killed before and i think we kill again. >> jimmy did teld beaumont that hall had killed again but there was no documentation. it was just jimmy's word, so to be sure, the prosecutor made him take a lie detector test. and jimmy passed with flying colors. >> he was telling the truth. so the bottom line is, we had further information that larry was responsible for tricia. >> a grateful beaumont decided to reward him with full credit for his brave undercover work, releasing him from prison, and scrubbing his criminal reco