the ghoul 1933

Professor Henry Morlant (Boris Karloff), a great Egyptologist, thinks that the ancient jewel which he calls the "Eternal Light" will give him powers of rejuvenation if it is offered up to the ancient Egyptian god Anubis. But when Morlant dies, his servant Laing (Ernest Thesiger) steals the jewel. While a gaggle of interlopers, including a disreputable solicitor (Cedric Hardwicke) and a fake parson (Ralph Richardson), descend on the Professor's manor to investigate or steal the jewel for themselves, Morlant returns from the dead ("when the full moon strikes the door of my tomb", he predicted before dying) to kill everyone who has betrayed him.