In 2002 a fireman discovers a burning body. With only little information the police needed to find the murderer.

A body of a man is found in a fishing net, but when the police start looking for his identity they discover someone is not who he seems to be.

A woman is killed by a parcel-bomb, now the police need to look for a killer who was miles away at the time.

A woman is stabbed and found near her home, all leads end up in dead ends until the police find a photo.

An abandoned car is found but the police only start looking around after a few days, they find a woman but also discover this wasn't where everything started.

Part of a chopped up body is found in a floating suitcase, but who is this man and where is the rest of his body.

A couple have gone missing, but the police suspect their son might have done something.

Several London police districts need to work together in order to catch a serial killer who targets gay men.