Line of Duty - Series 4

21 Jump Street revolves around a group of young cops who would use their youthful appearance to go undercover and solve crimes involving teenagers and young adults.

Sexy New York detective and single mother Harlee Santos fell in with a tight-knit group of dirty cops, taking bribes and protection money that she uses to provide the best life for her honest, talented daughter. But when she's trapped by the FBI and forced to inform on her own "brothers," she'll have to walk the fine line between love, loyalty, honor and betrayal, and try to keep it together for her daughter's future.

Keeping these streets clean is a Herculean task, enough to demoralize even the keenest rookie – but there’s a reason why this hotchpotch of committed cops are on this force, on this side of town. Drug labs, arsonists, neo-Nazis and notorious murderers are all in a day’s work for this close-knit team, led by the dizzyingly capable but unquestionably unhinged DI Vivienne Deering. But when a particularly twisted serial killer emerges it leaves even the most hardened of these seasoned coppers reeling.

DCI Ellis, a tenacious cop, is parachuted into failing investigations alongside her partner DS Harper. Each case will bring her to a different police station where she'll have to not only immerse herself in the case, but also win over the local police.

Regina Haywood is the newly promoted deputy inspector of East New York, a working-class neighborhood at the edge of Brooklyn. She leads a diverse group of officers and detectives, some of whom are reluctant to deploy her creative methods of serving and protecting in the midst of social upheaval and the early seeds of gentrification.

In early 90s Boston, an African-American District Attorney comes in from Brooklyn advocating change and forms an unlikely alliance with a corrupt yet venerated FBI veteran invested in maintaining the status quo. Together they take on a family of armored car robbers from Charlestown in a case that grows to encompass and eventually upend Boston’s city-wide criminal justice system.

Deputy Police Chief Brenda Leigh Johnson transfers from Atlanta to LA to head up a special unit of the LAPD that handles sensitive, high-profile murder cases. Johnson's quirky personality and hard-nosed approach often rubs her colleagues the wrong way, but her reputation as one of the world's best interrogator eventually wins over even her toughest critics.

A thrilling drama based on the novels by Peter Robinson. Stephen Tompkinson and Andrea Lowe star as the tenacious and stubborn Chief Inspector Alan Banks and the feisty and headstrong Detective Sergeant Annie Cabbot.

The mysterious disappearance of a Scottish fishing trawler and a death on-board the submarine HMS Vigil bring the police into conflict with the Navy and British security services. DCI Amy Silva and DS Kirsten Longacre lead an investigation on land and at sea into a conspiracy that goes to the very heart of Britain’s national security.

Explore a gang world we've never seen before: gangs that are made up of the very men and women sworn to uphold the law – cops. Only select officers make the cut, but once inside, gang members will do what they must to protect each other from enemies inside and outside their ranks.