In the crime thriller, Gosling plays Sergeant Jerry Wooters - a policeman who goes undercover to join the fight against the mafia. The pacy trailer see's Gosling at his very best as the cool and calm cop, while Sean Penn - whose recent films include Milk and The Tree of Life - is terrifying as gangster Mickey Cohen.
Gangster Squad was originally set for release in September 2012 but - as the film includes a scene where characters shoot at moviegoers through the cinema screen - it was pushed back until 2013 as a reaction to the fatal shooting at a screening of Batman: The Dark Night Rises in Aurora.
The film will be in UK cinemas from 11 January 2013.