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

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

As Ben goes missing, Boyd and his team try to force the truth out of a confused David. Boyd grows increasingly close to Sarah, and Stella travels to Poland to investigate the true story.

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

Boyd and the team investigate Lore's true identity and the reasons why she is in danger.

Boyd receives an anonymous package in the post – a Nazi ceremonial dagger. Attached to it is a Cold Case number, linking it to the unsolved murder of a young girl in May 1945. It seems that Mel had been working on the case before her death, what does this mean for the Cold Case Team?

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

While under pressure to discover the truth behind the murder of young Joanna, DCI Boyd (Trevor Eve) slips up and makes possibly some irreversible mistakes. Joanna's killer begins stalking her sister.

A criminal is about to be released, the team is sure he is a serial killer. They enter in a race against the clock to prove their suspicions to prevent his upcoming release.

A man accused of opening fire on a crowd from a multi storey car park, and killing a policeman, is claiming his innocence. Boyd's colleagues question his loyalties when he seems unwilling to re-investigate. As DC Mel Silver digs deeper, she discovers some disturbing truths about her boss.

When they do some digging into the man's past, they discover the deceased was not who he claimed to be, but in fact he had a hidden agenda of his own.

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.

Boyd and his team struggle to find the truth behind the murder of a prominent Home Office adviser, when a petty criminal is acquitted of the crime. Once a prominent feminist activist, victim Katherine Reed had attacked the establishment at every opportunity, only to later switch sides. Boyd's progress on the case is hampered not only by a Home Office audit, which means the team will be shadowed throughout, but also by the fact that the original investigation was conducted by one of his old flames.

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?

Boyd vows to track down the ring of war criminals, all of whom are now living and working in the UK

The failed suicide of a women called Gemma who has been raped 12 years ago, when she was just a girl by two men, causes Boyd and his team to re-open the investigation. But as the previous investigation went nowhere there aren't any leads left to start from.

As DNA evidence from an old case of Spencer's (while he was working for the Atomic Energy Constabulary) is re-examined it appears that the wrong man was sent to jail. Someone tries to coverup the new evidence, causing all eyes to turn to Spencer.

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 shooting an unarmed man in the raid on the nursery, Mel is suspended from the case pending an inquiry. Grace and Boyd, meanwhile, have more questions for Roper—but the doctor's in no position to answer them.

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.

After they get a tip off in an anonymous e-mail,the team head to a waste ground in east London, where they find the remains of a right-wing fascist activist.

Boyd and the team take on the task of infiltrating the dark underworld of London's gangland crime families when Harry Newman makes a deathbed confession to 12 "unauthorised killings". Dr Grace Foley is intrigued by this strange expression but Boyd and the rest of the team are tempted to dismiss it as the meanderings of a dying man. Until, that is, forensic psychologist Frankie Wharton discovers that Newman did not die of natural causes, but has been murdered. They soon realise there's a lot more to Newman than they imagined. Added to all that, there's a link to a famous fifties trial in which a gangster was hanged for killing two policemen.

When a woman defends her daughter from a mugger, it sets into motion a chain of events that places herself and her children in mortal danger.

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?

A millionaire businessman is found dead, a year after he dissapeared. It appears that during the time he was missing he was being held prisoner. But why...

The postliminary inquiries into Harry Newman's past and the identities of the possible twelve murder victims uncover a connection to the infamous trial and execution of a well known gangster.

Boyd is suspended from work after being involved in a hit and run accident while possibly under the influence. While also trying to find out who framed Boyd, the team continue trying to find out if Vine is innocent or not.

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?

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.

As tension builds between Grace and Boyd the truth about Lisa is revealed. Meanwhile, the team have a new lead following on from Declan's death and it's a race to find the murderer before Lisa does.

After Sam is released from prison, a man is murdered in the hostel where he stays. Soon he is a suspect. But it looks as though Sam was in fact the intended victim. On the surface Sam appears to be a devoted family man, but he has a hidden past which the team can only speculate about.

Spencer goes undercover as a prison inmate to investigate the possible reasons for the murders from the man convicted of committing the crimes. To Spence's dismay, the man (who is too scared to say anything about what happened) commits suicide before he can be coerced into revealing who the real killer is.

Two sexually conjoined mummies mysteriously fall through the the ceiling of an old City bank, resulting in the Cold Case team being called in to investigate.

A young woman, Marina sets fire to an abandoned car in a street and takes photographs of it as it burns. Boyd walks by and tackles her to the ground, attempting to shield her from the possible explosion. He later learns that Marina's father died in a car accident a few years earlier in that spot, and Marina refuses to accept that his death was an accident. Although not officially a cold case, Boyd is intrigued and reluctantly agrees to investigate. Frankie runs forensic tests on Marina's father's car and proves that he was still alive after the crash and could have escaped. The answers they uncover may mean that the danger to Marina is much greater than any of them had suspected.

The team re-investigates the death of a teenage boy who was found on a building site some years ago, drowned in concrete. Part of a human ear is found in his stomach, linking him to the dumping of another seriously injured teenager in a hospital at around the same time. The ground on which the dead teenager was found belongs to a Catholic abbey which is soon to be dissolved, and the abbey owns a shrine which might contain evidence and has to be dismantled - a task which falls to the unwilling Stella Goodman.Meanwhile, new forensic scientist Dr Eve Lockhart makes her mark on the case.

A young woman who has psychiatric problems has killed her family through an arson attack on her family home. She claims she was incited to do this by a mysterious figure known only as 'The Shepherd'.

The gangster responsible for the bodies behind the walls in the Notting Hill house is still active and the unearthing of past events provokes more murders and an international turf war. Spencer's family history is the key to unravelling the mystery.

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?

A mummified body is discovered in a disused airliner that has been parked in the desert for 6 years. There are indications of a link to an armed robbery at Heathrow Airport six years earlier, and a murder at around the same time. Our team gains two new members. DS Andrea Stephenson takes over for DS Mel Silver, and the new mad scientist is Dr Felix Gibson.

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.

A recovered memory therapist alerts the CCS to a care home regime of sexual abuse of young boys and a suspected murder. Her client who revealed all this in a therapy session goes missing and the team strongly suspect he has gone on the hunt for the man who abused him and murdered his friend.

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

Continuing the investigation of the death of a teenager whose body was found in concrete on a building site years ago. The injured Joe McDonagh finally wakes from his coma - but how much light can he throw now on a boxing bout which went badly wrong long ago? Meanwhile, there are surprises in store for Boyd and Jordan.

The team discover the brutally murdered body of a man in the same cellar that the businessman was held hostage in. While investigating the two victims, the team find an unlikely suspect. They're positive of his connection to the murders, but need to collect the evidence to prove it.

While the security services begin using underhand methods, a former army officer promises Boyd explosive new evidence—but their meeting is destined never to happen.

Boyd has Marinas uncle, Mike Coleman and her mother Gwen brought in for questioning while Frankie searches the house. The team find the items that were recovered from the car nine years ago and suspect that Perry Coleman was being blackmailed by Rod Brogan, a friend of Perry's. Boyd has the body exhumed and the DNA results surprise everyone.

Two days after James Jenson is released from a psychiatric unit, the wallets of his victims are sent to a relative. Does this mean more murders could follow? And is James really responsible for the three coldcase murders, or did he take the blame for somebody else?

A mummified body sends the Cold Case Squad back to the sixties and to a Notting Hill house which had been featured in a film as the location for a murderous fight between gangsters. Renovation works at the house in the present day reveal more bodies behind the walls. The film starts to appear not so fictional after all. Things get even more complicated when Spencer tells Boyd that he and his family lived there when the events took place.

When the killer strikes at the heart of the team, the investigation takes a new track and the motive for the murders takes on a very different meaning.

After the shooting in the hospital in which Stella is wounded the involvement of the priest becomes clear. With the shooter killed there is no chance for interrogation, but his body provides a useful clue linking back to the cold case. In the meantime things become even more complicated when a women turns up who looks a lot like the one in the hospital.

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.

In 1948, post-war Britain, an ex-soldier has been found dead with his skull nailed to the floor. Now this case has been re-opened due to media attention and pressure created by his grandson.

When the gun stolen from Frankie is used in another murder, the Squad suspect the victim's gopher. It is revealed the first murder could have been a case of mistaken identity. Frankie and Grace begin to get creeped out by the effects of Boyd's Anger Management!

A criminal is about to be released, the team is sure he is a serial killer. They enter in a race against the clock to prove their suspicions and prevent his upcoming release.