next name that popped into my head was rick pauley. and because they popped into my head and i uttered their names, they were arrested. >> narrator: by then, four men were in jail-- danial, joe, eric and derek. then, with pauley and farris, there were six. and there was still no dna match. so the police went back to derek. >> they decided to give me a plea agreement as long as i named the dna match. >> interviewer: how would you know the dna match? >> i wouldn't. but, you know, at that time, i was like, "well, i don't know who the dna match is but, you know, i'll give it a shot." >> narrator: ford seemed interested in a former navy man named john danser. >> he wants me to put john danser into the story," so it was like, "okay, well, you want him there, john was there." >> narrator: the problem was that danser had an alibi. the day of the crime happened to have been his birthday. >> my client's alibi was that he was living in warminster, pennsylvania, at the time, which is right outside of philadelphia. he was working with an hvac compa