Helping you find what's best on UK television

Aired Saturday August 6, 9:00pm - 10:00pmon Pick TV

Mark of a Killer

Series 2 Episode 9: Bound to Kill

A serial killer taunts Wichita, Kan., for decades by sending brazen letters and taking credit for horrific kills; at the introduction of the computer era, the killer gets sloppy and accidentally leaves a digital clue.