yes, he admitted he was there when ben hobbs killed angie, even held her down, he admitted when ben stabbed her, and tylenol finally he even stabbed her one himself the the motive, revenge. supposedly angie had been meddling in ben's marriage and mr. hobbs did not like that one bit. >> detectives asked him 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 low 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 o'of them. >> what went through your heads when the dna results came back, and it showed that the attacker was not ben hobbs? if you're going to nail it down to one word, it's frustration. >> reporter: the detectives decided that didn't mean chris was lying or that their 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 guilty, they were sure of it, so that mystery dna must have come f