Ethan Hawke has joined the cast of the Untitled Scott Derrickson Project for producer Jason Blum.Scott Derrickson is directing from a screenplay he co-wrote with C. Robert Cargill. Little is known about the story, although it is said to be a crime story with horror elements. We first reported on this project back in May.Production is scheduled to start on September 19. Jason Blum is producing the Untitled Scott Derrickson Project along with Brian Kavanaugh-Jones. Charles Layton is the executive producer.Sinister was released October 12th, 2012.