Forensic Files II S02E10 - Full Circle

In 1990, three sex workers are brutally murdered and left along the banks of the Spokane river. A serial killer was on the loose—and detectives had few clues.  Animal hairs, fibers and a fingerprint were found, but for years the perp was never identified. More than 20 years later there's a break in the case- and an arrest is finally made, but no one could have ever imagined who was behind this sinister crime.