Scott Derrickson is an American director, screenwriter, and producer. Derrickson co-wrote and directed the film The Exorcism of Emily Rose which was loosely based on a true story about Anneliese Michel. Derrickson next directed The Day the Earth Stood Still starring Keanu Reeves and Jennifer Connelly, written by David Scarpa. Derrickson teamed up with producer Jason Blum (Paranormal Activity, Insidious) to write and direct Sinister, a mystery-horror film starring Ethan Hawke. Derrickson's script Devil's Knot was directed by Atom Egoyan.