Friends reunited. When a wealthy mobile-phone magnate is stabbed at his school reunion, all evidence points to his former best friend. Never content with the easy answers, though, Davies tracks down the real perpetrator. Towpaths of glory. A decorated war veteran meets an undignified end and the soldiers in his former unit may know more about their murdered comrade than they're saying.

Three steps to Hendon. Back in the 1970s the Overnight Sensations topped the pop charts with their hit "Yesterday's boy". Ironically, that title aptly describes the fading fame of the group's lead singer, Teddy O'Connor, just before his murder. Interviewing Teddy's band mates and groupies, Davies discovers the dark side of glam rock. Willesden confidential. The death of champion stock car driver Geoff Fallon seems like an open-and-shut case, but Davies...

Detective Constable 'Dangerous' Davies is the odd man out in his small London police station. He cracks the tough cases anyway, with old-fashioned investigative work rather than violent confrontation.

Detective Chief Inspector Tony Gates is an exemplary cop. He's got the best crime stats on the force and a loyal team working under him. But the head of the police anticorruption unit, Superintendent Ted Hastings, has his doubts about Gates. Is he really that good? And more importantly, is he really that clean? Hastings decides to find out and all on a new arrival to his department, Detective Sergeant Steven Arnott to help him do it. As the net tightens...

Season two has Lindsay Denton, a member of AC12, a police anti-corruption unit, charged with investigating an ambush of a police convoy.

In the thick of a career-defining case, Roz is under intense pressure to prove herself to her superiors. But when she faces conflict with a colleague, it's not long before AC-12 decide to probe her handling of the investigation.

"One of Britain's most thrilling series" (Entertainment Weekly) returns as the elite squad of detectives begin investigating a string of murders with links to the police force. Could the killer be a fellow officer? The case has deeply personal ramifications for the team led by DI David Bradford, involving DS Vivienne Cole's ex-husband and threats to DC Rob Brady's family. As they try to discover if a murderer lurks among their ranks, the detectives...

Series follows anti-corruption unit 12 (AC-12) as they investigate fellow police officers accused of corruption. In series five, Stephen Graham stars as John Corbett, the ruthless leader of an organized crime group who hijacks a seized drugs transport. AC-12 investigators suspect corrupt police officers of leaking information. As the body count rises, AC-12 realize they're facing their most vicious adversary yet.

Haunted by the failure to catch Jack the Ripper, Inspector Edmund Reid is charged with keeping order in the blood-stained streets of Whitechapel. Reid and his men find themselves fighting to uphold justice and the rule of law. But always in the background lurks the gear of the Ripper.

Fresh off his success catching a headline grabbing killer, DCI Colin Sutton is on the brink of retirement when he's asked to review the long running inquiry into another infamous predator. Known as "The Night Stalker" to the press and "Minstead Man" to the police, this serial rapist has stalked the elderly of Southeast London for nearly two decades.