Quest Red +1

A field becomes a graveyard in Ohio when a woman's body is discovered, but solving her murder means turning to a rare technique of fingerprinting.

On Valentine's night, James Enright is stabbed to death near a station in Burnaby, Canada. Through CCTV, police discover it was caught on a phone camera.

Sometimes the scales of justice are balanced by just a few milligrams of evidence, a couple of fibres, a tooth filling, or a smudge on a piece of tape.

In San Antonio, Christopher Duncan leaves his apartment never to return home. Police have little to go on until surveillance footage offers up the possible identity of a dangerous killer.

When 37-year-old Natasha Cournoyer goes missing, her family and friends are desperate for answers. Police use surveillance video to track her final steps.