Boyd has to break in a new team member of equal rank, Detective Superintendent Sarah Cavendish, a high-flyer recently grounded by a hushed-up failed operation.After the empty and abandoned car of banker Donald Rees is discovered threee years after he went missing, Boyd decides to take on the case in an effort help the man's family find some closure with their lives.

Boyd is convinced that the missing Donald is not a murderer, and pushes his team to try to make sense of all the vague connections in the case and eventually confront the unfathomable evil lurking within the heart of this sad, unfortunate family.

After a woman is discovered stabbed in the eyes and incinerated in her car she is identified as Claire Somers, a neglected child who was taken into care, then later kidnapped in 1986 at the age of seven. Robert Fenchurch had his eyes stabbed out on the night Claire was kidnapped as her abductor fled the scene. The team soon find out that Claire had snatched 15-year-old Abigail Harding, who was found locked in a hotel room.

The investigation into Claire Somers' death has seemingly unleashed a predator straight from the darkest childhood nightmare. But are they looking for a monstrous child-stealer, or misguided saviours?

When the squad look in to the case of an army activist discovered in London's sewer system they discover that the case may have more police connections than they originaly thought.

As the case continues, the squad investigate Murray using Grace as bait. However, when one member is shot and one member is arrested, the case could go in to turmoil, only for a connection to be revealed.

Boyd suspects a cover-up when a missing student's DNA matches with an unidentified corpse.

Boyd needs Sarah's expertise to help expose the state's involvement in Barclay's death.

Boyd investigates the disappearance of 16 homeless boys from Waterloo Bridge in the 1980s.

Time is running out for Boyd as he fights for justice against a powerful adversary.

Whle facing a surprise audit from the Home Office, DCI Boyd (Trevor Eve) and the team try to continue their investigation into the murder ... but as they go on with their inquiries at Whitehall, they quickly discover the atmosphere to be very dark and secretive.

Grace is haunted by an old case that she assisted on at the beginning of her career when she is asked to give evidence at the assailant's appeal hearing.

The Cold Case team is forced to enlist the help of a psychotic serial killer named Thomas Rice, AKA "the Gambler" (because he left playing cards at the scenes of his murders). The one woman who escaped death at his hands, the cool and poised Dr Clare Delaney, gets a dreadful reminder of her past ordeal and a fearful shock when a playing card is flung at her car windscreen as she sets off to make a house call on a wet, windy, dark night. The team look again at the Gambler's crimes, prompted by Boyd's unshakeable belief that Rice had claimed other, hitherto undiscovered victims.Boyd - who has personal links to the case - and Grace decide to use detective constable Amelia Silver to lure a confession from Rice.

Boyd and the team continue to begrudgingly rely on serial killer, Thomas Rice's assistance on the case, while also trying to protect Dr. Delaney from experiencing her terrifying ordeal once more at the hands of the copycat assailant. It becomes apparent that he might have help on the outside, so it's crucial that Boyd confronts one of Rice's intended victims, Dr Delaney, to find out what went on during her captivity. Why did he spare her life?

MI6 asks Boyd to reopen the case of the killing of an Iraqi dissident.Meanwhile, a man running for election as President of the Sudan announces he is going on hunger strike to protest at Britain's refusal to return the skull of a 19th century leader.

Boyd finds a connection between the recent murder of an Iraqi and the local ruler's skull taken from the Sudan by British troops more than a hundred years before.

The team find out that a body discovered in a disused tunnel is that of salesman Chris Dearden, who went missing in 1996. He was on a self-empowerment weekend with his colleagues when he died.Could one of them be responsible?

The team find out that a body discovered in a disused tunnel is that of salesman Chris Dearden, who went missing in 1996. He was on a self-empowerment weekend with his colleagues when he died.Could one of them be responsible?

Eve's trust in her boyfriend proves unfounded as he turns out to be worst then even Boyd expected. Fortunately she is able to escape from the location where she is being held, but Stefan isn't going to let her go that easily.

The accidental excavation of a human hand leads the cold case squad to the cover-up of a major incident.

When Eve's new boyfriend Stefan is being vague about his past she puts her skills to use and uncovers something she rather wouldn't have. Unsure about the next step she turns to Boyd for advice, initially he promises support. But once the facts become clearer Boyd and Eve want to follow a different path.

Following the murder of Mark Lovell's cousin, the team establish that Mark has a watertight alibi, and the search for the real murderer narrows down to the remaining family members. Their investigation into the two remaining family members is further complicated by the discovery of drug dealing and involvement in the witness protection scheme.

A psychiatric patient, imprisoned for the murder of his parents as a teenager escapes and reveals the location of an unknown corpse.

The case becomes more complicated as Boyd discovers that alterative practises may have contributed to Daniel's instability.

An Iraqi woman proves the key to the unlocking of the case.