Directed by Louis Leterrier Produced by Basil Iwanyk Kevin De La Noy Richard D. Zanuck Screenplay by Travis Beacham Phil Hay Matt Manfredi Based on Clash of the Titans  by Beverley Cross Starring Sam Worthington Gemma Arterton Mads Mikkelsen Alexa Davalos Ralph Fiennes Liam Neeson Music by Ramin Djawadi Cinematography Peter Menzies Jr. Editing