A visit to a clairvoyant leads to the UCOC squad investigating the case of a girl left to die in a transport container more than 20 years ago.

The UCOC squad fears they may have uncovered a serial murderer when they revisit a missing mother and baby case from 30 years ago.

This week, Sandra Pullman and her Unsolved Crime and Open Case team are called upon to investigate the apparent suicide of a teenager from 20 years ago.

The seasoned cop team investigate the murder of a young peace protester, killed near a nuclear base in 1984. Are they about to expose a cover-up?

The Unsolved Crime and Open Case Squad gets a taste of royalty when they are brought in to investigate art fraud in the Queen's private collection.

Three detectives are brought together to crack unsolved crimes from the past. Tonight, the UCOS team reopens the case of young police cadet Kate Daniels, brutally murdered in 1987.

Pilot: After an attempt to rescue a kidnap victim goes horribly wrong, Supt. Sandra Pullman, the officer in charge who shot a dog during the raid, is reassigned. DAC Donald Bevan puts her in charge of UCOS, a new unit focusing on unsolved cases. There are no resources available, but Sandra is authorised to hire retired detectives and turns to her mentor, Jack Halford, to help her assemble a team. The first case is the murder of a nightclub waitress in 1981 when the accused, Roddy Wringer, is released after 21 years in prison when one of the officers on his case is found to have been corrupt. Bevan is convinced Wringer is guilty and makes it clear that he expects Sandra to prove that.