C.I.D.

The mysterious disappearance of a Scottish fishing trawler and a death on-board the submarine HMS Vigil bring the police into conflict with the Navy and British security services. DCI Amy Silva and DS Kirsten Longacre lead an investigation on land and at sea into a conspiracy that goes to the very heart of Britain’s national security.

A detective team apply new techniques to old crimes as they solve cold cases.

In cases ripped from the headlines, police investigate serious and often deadly crimes, weighing the evidence and questioning the suspects until someone is taken into custody. The district attorney's office then builds a case to convict the perpetrator by proving the person guilty beyond a reasonable doubt. Working together, these expert teams navigate all sides of the complex criminal justice system to make New York a safer place.

A team of dedicated amateurs work on cases involving unidentified victims. After the police have given up, this group must first solve the puzzle of the victim's identity in order to then help catch the killer. They work to give the deceased back their names, lest they become—The Forgotten.