. >> lieutenant tommy barrella began escorting clanton back to colorado, as they spoke, the detective suspect had clammed up in that interview room, then, suddenly seemed to have a change of heart. he wants to talk? >> he wants to talk and they want to talk, my gosh, you have to let them talk. >> as they drove to the airport, tommy barrella grab his iphone and pressed record. my name is lieutenant tommy barrella and jim advised me that he'd like to talk about the crimes that he is being accused of. >> he told tommy barrella that he wasn't surprised when detectives asked them about helene. >> because i knew that was gonna come up and get me one day. >> why was it gonna come up and get you? >> i killed the girl they're accusing me of killing. >> in that moment, i was like holy crap, it pinched me, he just admitted it >> he lay down the details of that cold evening, how he had seen helene coming out of the bus and forced her into his car. >> i put my arm around her and had a knife in my hand and showed to her. >> did she say anything? >> she said i'll go. >> helene, he said, was cooperat