Forensic Files

Treads and Threads (6x14)

Air date: Aug 20, 2001

For 15 months, a serial killer was strangling prostitutes in Florida, then taunting police by leaving the bodies in plain sight. The only clues were a tire impression and some threads. By the time scientists identify the source of these treads and the threads, police discover the killer was right under their noses the entire time.