In the spring of 2012, six children are killed in a devastating house fire. The subsequent investigation discovers a story of abuse, lies and revenge which culminated in tragedy.
Keith Henry Blakelock who was a London Metropolitan Police constable, was murdered on 6 October 1985 in the Broadwater Farm riot that was triggered by the death of a black woman the day before.
A documentary examining how Sir Jimmy Savile went from a venerated national treasure in life to a man regarded as one of the UK's most despicable criminal monsters in death.
The London Nail Bombings: Police and witnesses reflect on David Copeland's nail bomb terror in 1999. Blasts in Soho, Brixton and Brick Lane killed three and injured over 100.
21-year old Stephen Cameron is stabbed in a road rage incident, and his killer then goes on the run. When he is finally identified he turns out to be Kenny Noye, someone already very well-known to police.
A look back at the 1989 Marchioness disaster. Fifty-one people died when the pleasure boat collided with a dredger ship on the River Thames. (S5, ep 5)