I ratted out my bank robber brothers

A powerful real-life story about a gang of three brothers and violent father, convicted in 1990s Sweden, is a bestseller there. Only one person could have told the tale – the fourth brother, who resisted a life of crime

Detective duos in fiction – quiz

Brace yourself for a new BBC series based on Agatha Christie's Tommy and Tuppence stories by testing your knowledge of literature's partners in crime-fighting