>> the paternity testing showed that the john doe dna on the shirt came from the father of this woman, kate aren't, who was barry bench's daughter. >> unbelievably, when this evidence was presented to the court, the judge refused to grant a new trial. he said he had no proof that barry bench was katherine's biological father. >> you would think you would be home the next day. you wouldn't think they would try to drag this out. >> this is the kind of people i'm dealing with. >> with more prompting, the state of new york exhumed barry benches body and took a dna sample. it conclusively matched the saliva on sabina kulakowski's t-shirt and roy brown was finally released from prison 15 years to the day he was convicted. but the question remains, why