Episode 1
An inquiry is about to decide if the killing by a Met officer of Mark Duggan was lawful.
Episode 2
Mistaken identity leaves a young father dead and detectives trying to catch his killers.
Episode 3
Trident, the Met's specialist gang unit, tackle drug dealers in south London.
Episode 4
London by night has its own challenges. Tackling the city's crime is different after dark.
Episode 5
Homicide investigate the tragic death of a four-month-old baby.
