S4 E1 • In Sight of the Lord (1)

Boyd and the cold case team investigate the unsolved murder of a World War 2 conscientious objector. In 1948 George Western was found in his living room with a nine-inch nail through his head. When his grandson Adam finds new evidence and organises a media campaign, the case is reopened. Then the body of elderly William Davis is found in similar circumstances. And Grace uncovers the identical killing of Norman Taylor in 1961. The team discovers that Taylor and Western were in the same regiment during the war and trace surviving members to try to solve the murders.

Première diffusion : 11 juillet 2004

S4 E2 • In Sight of the Lord (2)

The Cold Case Squad discover that the victims were a group of friends who were all in the same army regiment during the war. It seems the murderer is killing as an act of revenge.

Première diffusion : 12 juillet 2004

S4 E3 • False Flag (1)

Boyd and his team face a race against time after a skeleton found in a condemned garage triggers a tragic chain of events. The skeleton is that of garage owner, Gerald Doyle, an Irish terrorist who went missing in 1981. An unexploded car bomb found at the scene points to terrorist activity as the cause of death. However, Doyle’s parents produce a set of his diaries, which reveal that he was actually a mole for the British intelligence services.

Première diffusion : 18 juillet 2004

S4 E5 • Fugue States (1)

In 1990 - Jason and Cindy, two 5 year-old twins disappear from their home, and even after a nationwide search is launched, they are still not found. Thirteen years later, Jason is found in a hospital suffering from injuries he sustained in a car accident. But where's Cindy? Boyd and the team set out to find her. Mel Silver is trying to find her biological mother

Première diffusion : 25 juillet 2004

S4 E6 • Fugue States (2)

The team try track Jason as they work out how the twins were taken and why. They link the twins disapperance to a Dr Roper, who knocked Jason down. They unravel his past and find out some dark secrets. The squad work out who Cindy is now and try find her before its too late

Première diffusion : 26 juillet 2004

S4 E7 • Anger Management (1)

A man staying in a "halfway house" for released prisoners uses a gun - that is revealed to have been used in contract killings years ago - commit suicide. The gun is later stolen from Frankie's lab. Investigations reveal that the gun could have been used by a hired assassin in 9 murders over the last 30 years. Boyd is taking Anger Management.

Première diffusion : 1 août 2004

S4 E8 • Anger Management (2)

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!

Première diffusion : 2 août 2004

S4 E10 • The Hardest Word (2)

The case continues as we learn of the death of D.S. Dave Marvin. Marvin has been found dead in his car with the same markings of sorry on his back. Throughout this episode we learn that Greta is hiding something from us and who is the mysterious old man who keeps turning up every time a body is found???

Première diffusion : 9 août 2004

S4 E11 • Shadowplay (1)

A young woman with a history of psychiatric problems kills her family by setting the family home on fire. She admits to the crime, but claims that she was coerced in to doing it by a mysterious character known only by the name 'The Shepherd'. Her psychiartrist links her case to similar cases and gets the Cold Case Squad involved.

Première diffusion : 15 août 2004