An inquiry is about to decide if the killing by a Met officer of Mark Duggan was lawful.

Mistaken identity leaves a young father dead and detectives trying to catch his killers.

Trident, the Met's specialist gang unit, tackle drug dealers in south London.

London by night has its own challenges. Tackling the city's crime is different after dark.

Homicide investigate the tragic death of a four-month-old baby.

On the hottest night if the year, a huge impromptu summer party in Hyde Park results in chaos. Police come under attack and there is also a vicious stabbing. Homicide and Serious Crime Command hundreds for the suspect.

Gangs are a major problem for police and in Harlesden a long running turf war has had horrific consequences. A young man has been shot, an innocent casualty of a violent gang feud.

It's the start of a bank holiday weekend and a young man has been stabbed in Hackney. Police rush to the scene but the victim doesn't want one tell them anything about what's happened.

In Brixton custody suite a detainee has stripped naked and is refusing to come out of his cell, a 54 year old man has been brought in for threatening the cashier in his local supermarket with a knife.

Homicide detectives investigate the murder of an elderly man in North London. Plus, we follow an undercover operation attempting to cut off the drugs supply in East London, and in West London Police are on the hunt for Ealing's most wanted burglars.

Detectives investigate a case of rape by a stranger, the Territorial Support Group respond to knife crime in London and CID search for a suspect after a man is robbed at gunpoint.

2018 saw the highest murder rate in London in over a decade. This episode follows the investigations into two of these killings.

A specialist unit tries to tackle moped crime, and at the Notting Hill carnival police introduce a controversial tactic.

Detectives from the Murder Investigation Team deal with an attack in Greenwich, where 30 year-old Jozef Boci is violently beaten after a night out. In central London response officers PC Alex Orme and PC Lydia Vanbergen are on patrol in Westminster.

A man is found slumped in a passage way with a single stab wound, police deal with an allegation of domestic and financial abuse, and officers go to the aid of a frequent caller.

The murder investigation team are called in after a violent attack on a bus. Meanwhile, the Met prepare for Donald Trump's first visit to the UK.

A man is attacked and dies in Trafalgar Square, the Trident team try to dismantle one of London’s most dangerous gangs, and response officers have to deal with a drunk driver.

Detectives investigate the murder of a 17-year-old boy and gather evidence against a human trafficking gang, as public trust in the Met reaches a record low.

Detectives search for a missing young woman. After discovering CCTV footage of her going into a storage container with a man but never emerging, they fear she has been murdered.

Detectives investigate the murder of a homeless man who has been beaten to death in a London park and the rape of a young woman by a stranger on the street.

Detectives investigate the fatal stabbing of a motorcycle stuntman on a music video shoot. A manhunt team searches for a suspect on the run, accused of raping a 12-year-old girl.

An elderly couple are burgled and attacked in their home. The police call in the Flying Squad, an elite unit of covert officers who launch an operation to catch the perpetrators

Detectives investigate a series of sexual assaults and the mugging of an elderly woman. Contains some strong language and upsetting scene.