
Profiles the work of police officers who are tasked with investigating some of the toughest murder cases in criminal history.

An unlikely informant holds the key to justice when 59-year-old antique dealer, Michael Griffiths, is targeted and brutally killed in his home.

A computer at Vogue magazine holds the key to identifying Julie Clayton, an ex-cult member who is assaulted and murdered upon leaving.

It takes 18 years to identify Melissa Halstead after her torso is found in a Rotterdam canal, but detectives never stop working to catch her killer.

A smoking stolen gun leads to an elderly weapons enthusiast's killer.