. >> matthias reyes manages to get the attention of law enforcement and they do a dna test, they takethey have what they never had in the trial in 1990, which is a match. a perfect match. >> i was like, oh, that's great. we got the final guy, the guy who'd gotten away originally in 1989. but then he turned around that he did it by himself. >> i was alone that night. i saw the lady. she was jogging. at the right-hand side, i saw a piece of branch there, i struck over her head with the branch and she fell forward. i grabbed her to drag her inside of the bushes. as i dragged her there, i remember that i took off her clothes. >> reyes knew some things about the victim and the crime that had never been revealed and that only a person who was there would know. >> the investigation into matthias reyes and his story was conducted by the district attorney's office. >> the spring into the summer of in 1989 there was a rash of violent rapes, all along madison avenue, culminating in murder of a woman on 97th street. the east side rapist they were calling him. >> the police officer investigating t