for the upper darby police, that's enough for an arrest. riky jackson is taken into custody and charged with first degree murder. >> the single piece of evidence that identified riky jackson as our suspect was the print evidence, both the fingerprint and a partial palm print. >> despite the seemingly overwhelming evidence against him, jackson maintains his innocence. >> it was kind of like having a bomb dropped on you. mentally, you kind of just go a little numb. i know i had nothing to hide. i wasn't even thinking i had nothing to hide. it just -- i'd never been through a situation like this. >> riky's father, richard jackson sr., can't bring himself to believe that his own son is a murderer. >> the first call i received was from riky. when he explained to me what was going on, i asked him. son, did you do this? and he said no. >> they already told me at the police station that they had my fingerprints in blood through the whole thing. i was thinking, oh, tomorrow it will blow over. they will figure it out. >> we arrived at the police a st