S1·E6 The Witness

Continuing from the previous episode, Kevin and Frank investigate a serial killer stalking females at night. A woman is scared in a park and runs to the police fearing she was the next victim. The suspect is questioned but released when they find no reason to hold him. After leaving the police station the woman is found murdered and the only witness is Whitey who may have taken a picture of the attacker. Kevin discusses theories on the killer with Tom and discovers some odd similarities with past attacks in other areas. Kevin consults with a national database operator regarding similiar crimes and is startled by his discovery...