The film is directed by Tony Scott (Man on Fire) and also stars Lucy Liu, Christopher Walken, Mickey Rourke, Jacqueline Bisset and Delroy Lindo.
The movie tells the story of Domino Harvey (Knightley), a former model and daughter of actor Laurence Harvey, who has abandoned her easy life to become a bounty hunter.
The film will be in theatres this summer.
To watch the trailer, click here.