In 2009, 25-year-old student Julissa Brisman is found shot and bound in an upmarket hotel room in Boston. With no witnesses to the crime, investigators turn to surveillance cameras in the surrounding area and quickly unravel a serial attacker.

In February 2008, Christopher Duncan left his apartment in San Antonio Texas, never to return again. Police have little to go on until surveillance footage has the potential to reveal the identity of a dangerous killer.