When the conviction of a notorious crime boss, Edward Monroe, is questioned because a corrupt senior officer might have suppressed some evidence, UCOS is tasked to make a preliminary investigation. This case hits home for DCI Miller as she is certain that Monroe killed her CID partner eight years ago.moreless
The weapon used to murder an Italian immigrant is found when an unexploded World War II bomb is unearthed on a West London allotment. UCOS re-opens 25 year old case and the ritualistic way of the killing leads then to one of the other gardeners when it's revealed he is a practising druid. DCI Sasha Miller arrives to replace Det Supt Sandra Pullman.moreless
UCOS re-opens 17 year old missing person's case of a music student when a photo that features her is found in a charity shop donation bag. Sandra is convinced that it's a work of a serial killer. The team puts their efforts on identifying and finding all the other people on that photo. But when the pressure increases to hand over the investigation, Sanda starts to think about her future and turns to Jack to help make a decision.moreless
UCOS re-opens an old case of MP's researcher Ben Ransley's death when a dormant offshore bank account containing a lot of money is discovered in his name. He was killed on the evening of Labour's landslide victory and police found a photo of a beautiful blonde in his wallet. The woman was never identified. In the search of this woman Strickland introduces Sandra to a war crimes prosecutor who is very helpful to the case.moreless
UCOS team are tasked to re-investigate the five year old case of Simon Belgrade's disappearance when his blood-stained identity card is found in Epping Forest.
The UCOS team reopens a unsolved murder case of pornographer Jim Hockney when his daughter's paternity test reveals that he was not her father. They try to track down the previous suspect for the crime, the victim's girlfriend jazz singer Angela Gold. Recently retired police officer Dan Griffin joins the team as Brian's replacement.moreless
To keep his mind busy after his dismissal from the UCOS, Brian agrees to help one of Esther's friends to find her missing brother. At the same time UCOS team is trying to track down a conman who may be connected to several outstanding cases.moreless
UCOS team re-investigates the murder of the young mother whose husband was convicted for her murder after he is released on appeal. Brian thinks his days at UCOS are over.
The team is still in Rock of Gibraltar and are struggling to figure out what links murder of Christian Highsmith in 1998 to the murder of young local boy in 1982. After their return to London Brian Lane faces a disciplinary hearing for assaulting Commander Embleton at his retirement party.moreless
A mysterious gun is found in the Thames which leads UCOS to an unsolved murder of a playboy shipping heir in 1998. Brian Lane gets suspended after he is accused of assaulting a fellow officer he thinks has cover up a death in custody which lead to his early retirement from the police force.moreless
McAndrew and Standing are sent to Scotland by Strickland for a week, to help the Glasgow Police try and establish a new UCOS section led by DCI Fiona MacDougall. While there, they end up being caught up in a cold case from 1993 featuring the murder of bookie James Soutar.moreless
Thirty years ago, Strickland and a group of his associates, including Stephen Fisher, were involved in a covert operation on behalf of MI5. Now, someone is trying to kill all the members of that group and Strickland turns to the UCOS team for help.
The team investigate the murder of an East German immigrant, but they only have his mysterious final words to work with. As they attempt to piece together his remarkable story, Sandra attempts to gain the trust of his estranged daughter.moreless
UCOS re-open the case of Sean Docherty, a talented young poet whose burnt body was discovered ten years ago in the scrapyard of a known gangster. While Gerry is convinced that the murder is related to Docherty's criminal connections, Brian is sure that the answer lies in his poetry.
The body of a missing computer expert turns up in a hospital morgue under a false name, so the team reopens the investigation into his disappearance. The dead man worked for the Metropolitan Police, giving him access to a great deal of sensitive information—added to which, he was in contact with a group of online hackers. As the seasoned detectives unravel the mystery, Brian struggles to accept Steve as the new UCOS member, forcing Esther to intervene.moreless
Retired DI Steve McAndrew from Glasgow joins the team to reopen one of his old cases when the DNA of a woman who went missing as a teen turns up at the scene of a petrol station robbery.moreless
UCOS re-open the investigation of a diplomat who drowned in the Thames just before Christmas 2008. Her eccentric twin sister believes that the Foreign Office is behind the death of her diplomat sister, making Pullman wonder if there might be some truth to Minnie's paranoia but Gerry is convinced there is another answermoreless
The team are called in to reinvestigate the disappearance of PE teacher Jason Bowe after a body is found on the perimeter of the elite public boarding school where he was employed. The investigation has come at a really bad time for the school, which is getting to welcome a former pupil, the Rt Hon Geoffrey Parkes MP, for the opening of a new computer centre.
Jack announces that he he has decided to leave the team, but before Sandra, Brian and Gerry can question his reasons, Whitehall figure Stephen Fisher shows up with one of his secret cases featuring the unsolved murder of a woman dating back around a hundred years. With only 24 hours to solve it, the team attempt to find time to get to the bottom of Jack's surprising decision and attempt to persuade him not to leave.moreless