Stephen Cyrus Sepher is an American actor, screenwriter, director, and film producer. He is known for writing, producing, and starring in the Robert De Niro film Bus 657, also starring Jeffrey Dean Morgan, Dave Bautista, Morris Chestnut, Kate Bosworth, and Gina Carano.According to the official Facebook Fan Page for Bus 657, "The film was written by actor Stephen Cyrus Sepher who, after feeling unfulfilled by his experiences within the movie business, decided to take matters into his own hands.