The teenage wizard is alarmed to learn a dangerous fugitive sorcerer is searching for him. Meanwhile, a new teacher at Hogwarts helps the bespectacled youngster to protect himself from the school's soul-sucking security guards. The third in the fantasy adventure series, starring Daniel Radcliffe, Emma Watson, Rupert Grint, Gary Oldman, David Thewlis, Michael Gambon, Robbie Coltrane and Alan Rickman