a horrendous crime to lose your daughter and never find out what the heck happened to her. >> larry beaumont kept looking 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. 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 in to talk. >> scared me. i thought it was a trick. >> keene watched nervously as beaumont pushed a folder across the table. >> and i opened 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.

out and look for the body. >> beaumont called in specialized military and law enforcement units to search. >> so rather than give up, it occurred to me that obviously larryl 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 keen. beaumont had sent both keen and hall to prison. now he hashed a risky plan that would bring them together. keen was ten months into his sentence when beaumont brought him in to talk. >> scared me. i thought this was some trick. >> keen watched nervously as beaumont pushed a folder across the table. >> i open it up. 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 that moment i looked up at beaumont. he said, jimmy, we need you to help us with this case. >> beaumont wanted keep to go undercover to transfer from his low-security lockup to a dangerous prison. and to befriend alleged serial killer larry hall. >> he says, if you can get solid confessions

just a horrible crime to lose your daughter and never find out what the heck happened to her. >> larry beaumonting too. >> actually made a couple of arrangements 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 her, but 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 somebody to be larry hall's friend, somebody with charisma. somebody on the inside. larry beaumont needed jimmy keene, he had sent both of them to prison. now he hatched a risky plan that would bring them together. keene was ten months into his sentence when beaumont brought him in to talk. >> it 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 had seen was the picture of a mutilated dead girl. and i flipped to a different page and there was a different mutilated dead girl. >> and there was a portrait of tricia reitler. and i looked