Sybil is a 2007 American made-for-television drama film directed by Joseph Sargent, and written by John Pielmeier, based on the 1973 book Sybil by Flora Rheta Schreiber, which fictionalized the story of Shirley Ardell Mason, who was diagnosed with multiple personality disorder (more commonly known then as "split personality", now called dissociative identity disorder). This is the second adaptation of the book, following the Emmy Award-winning 1976 mini-series Sybil that was broadcast by NBC. The university scenes were filmed at Dalhousie University in Nova Scotia.