a horrendous crime to lose your daughter and never find out what the heck happened to her. >> larry beaumonting too. >> i actually made arrangements on a couple of occasions to go out and look for the body. >> beaumont called in specialized military and law enforcement units to search. >> we were not able to find it. so rather than give up, it occurred to me that obviously, larry hall knew. >> beaumont needed answers and turned to an unlikely source to get them. he needed someone to befriend larry hall. someone charismatic, someone on the inside. larry beaumont needed jimmy keene. bo beaumont had sent both keene and hall to prison. now he hatched a risky plan that would bring them together. keene was ten months into his sentence when beaumont brought him into talk. >> scared me. i thought this was some trick. >> keene watched nervously as beaumont pushed a folder across the table. >> and i open it up and the first thing i seen was a picture of a mutilated dead girl. and i flipped the next page and there was a different mutilated dead girl. >> and there was a portrait of tricia reitler. >> at

ground. >> he had been caught in a drug sting, spearheaded by that hard-nosed federal prosecutor, larry beaumont. >> we scooped him up in an operation that i ran, we called it operation snowplow. >> and in court, beaumont showed keen no mercy. >> he was coming at you on all fours. wasn't he? >> oh, god. he was a bulldog. >> jimmy was convicted and slapped with a ten-year sentence. >> it was a pretty stiff sentence. i knew he didn't expect to get ten years in that case. >> your father was in the courtroom. >> right. i knew i had let him down, and probably one of the biggest ways you could let somebody down. >> keene's future was bleak. he faced ten years away from his glamorous life, the fast women, fancy cars, the big bucks. but in 1998 just when all hope seemed lost, his old nemesis, beaumont, came to him with an offer of freedom, attached to the accordion file he slid across the table. in return, keene would have to agree to risk everything and become an undercover informant in one of the roughest prisons in the country, the maximum security lockup in springfield, missouri. it was a psychiatri