 Mason's novel "The Four Feathers", which became the film "The Four Feathers" (2002), directed by Shekhar Kapur and starring Wes Bentley and Heath Ledger.In 2008, he adapted the Elmore Leonard novel "Killshot" into the screenplay for the film "Killshot" (2008), directed by John Madden and starring Thomas Jane, Diane Lane, Mickey Rourke, Joseph Gordon-Levitt, and Rosario Dawson.In 2010, Amini wrote an original screenplay for a film entitled "Shanghai" directed by Mikael Håfström and starring Chow Yun Fat, Gong Li, Ken Watanabe and John Cusack.