Kelly Masterson is an American screenwriter, playwright and writer who lives in New Jersey. He wrote the screenplay for the film Before the Devil Knows You're Dead, for which he is best known. Before moving to New York to stage several of his early plays, he studied Theology at the University of California, Davis.[1] In describing his script for Before the Devil Knows You're Dead, he has said:
He tried to get the script made for seven years before director Sidney Lumet agreed to direct it.
Masterson is currently working on "Good People" to be produced by Tobey Maguire, "Mixed Blood" to be directed by Phil Noyce with Samuel L. Jackson starring and "Brother Jack" to be directed by Barry Levinson.