Sean Bean will guide audiences through the labyrinthine alleyways of industrial Birmingham where the city's ruffians battled with the police and with each other.
With exclusive testimony from the Capone family, expert analysis examines the personal life and complicated legacy of the 20th Century's most famous criminal: Al Capone.
Stephanie St. Clair, forcefully ruled Harlem's numbers rackets with an iron fist, facing off against all rivals and surviving assassination attempts.
Sean Bean revisits Billy Hill and the Krays, tracing how the twins spent most of their life in jail, while London's original 'Gentleman Gangster' lived out his days as a free man.