her parents call it a huge development. >> our probability of having him apprehended is huge. now the face of evil was in front of me today. >> it's a creepy connection, this man is wanted for an unsolved sexual assault from 2005, in fact this wanted poster is five years old. but investigators just realized forensic evidence from that crime scene links him to morgan's crime scene. >> i think he is a serial offender. and given the opportunity, will do so again. >> reporter: what the picture doesn't tell us is why or how morgan was killed. >> okay now let's go public, let's put this out there, let's get more eyes on this case to see if in fact somebody out there can help us identify this person and help us make that link to morgan's case. >> reporter: they're worried he has changed his appearance making him virtually untraceable, but it's the best