before long, christopher tapp wrote a statement for police. he said that was hobbs killed her and i left it off as though it was a joke. >> after over the course of several, weeks they had to happen here nine times. the even gave him an immunity deal and that is when mr. tapp 's story began to evolve. he seemed to be there, even held her down, he admitted. and stabbed her, and he said he even stopped her once himself. the motive? revenge. what angie had been meddling in hubs marriage and he did like that one bit. >> so detectives questioned him and denied all part of the murder. >> i don't know, that's why i'm asking you. because if she was, my dna will prove my innocence right there. >> and lo and behold, he was right. that dna results came back, and the semen found on angie's body did not belong to hobbs or tapp. neither one of them. >> what went through your heads when the dna results came back and it showed that the attacker was not them? >> one word, frustration. >> but the detectives decided that didn't mean that christopher was lying or