Fantasies aside, Mary Elizabeth Winstead has joined the cast of Daniel Stamm's [The Last Exorcism] psychological thriller The Darkness to play a Babysitter. Winstead will portray an American student looking after her tutor's two children in a remote English manor house. She soon comes to believe that she & the children are being haunted when their lives are threatened by mysterious events. The script by Megan Holley [Sunshine Cleaning] is loosely based on the Henry James novel Turn of the Screw. Occupant Entertainment’s Joe Neurauter & Felipe Marino & Management 360's Ben Forkner will produce. Genre-specialty banner XYZ Films will executive produce. The Darkness is slated to begin lensing in Europe this summer.