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

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.

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.

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

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.