It's 1968. Gangster has come to work for Freddie Mays, the Butcher of Mayfair, and he's enjoying his job. He likes the money, the girls, the suits, the power, the violence. And gangster is good at what he does, very good. He frightens people and he's going to frighten Freddie Mays. When rival gang boss Lennie Taylor hatches a plot to kill Freddie and take over his territory, Gangster finds out about it and puts together a plan which will take out Lennie and Freddie at the same time. With Lennie dead and Freddie inside, Gangster finds himself alone at the top with only one way to go.
Lots of blood, gore and sharp suits. Held together by two good performances by David Thewlis and Paul Bettany as the violent, sexually ambivalent, disturbed and ultimately deranged Gangster of the title.