yes, he admitted he was there when ben hobbs killed angie, even held her down he admitted when ben stabbed and then finally, he said, he even stabbed her once himself. the motive, revenge. supposedly angie had been meddling in ben's marriage and mr. hobbs did not like that one bit. >> so detectives confronted hobbs, who denied any part in fact murder. and asked them a question about angie. >> was she raped the night she was killed? >> 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 result came back and the semen found on angie's body didn't belong to ben hobbs or chris tapp, neither one of them. >> what went through your heads when the dna results came back and it showed that the attacker was not ben hobbs. >> it's frustration. >> but the detectives decided that didn't mean chris was lying or that the theory of the crime was wrong. it could only mean they decided that they needed to expand the theory. ben hobbs and chris tapp were guilt, they were sure of it, so that mystery dna must have c