This is the one of the true horror masterpieces of British cinema of the 1930s. Karloff has great fun as a dead Egyptologist who returns from the grave to seek vengeance on those who defiled his tomb. Much of the action takes place in a spooky mansion during a night with a full moon. The moment when Thesiger see Karloff open the door of his tomb and step into the moonlight is unforgettable. This film also boasts one of the finest music scores of any horror film from the 1930s. The scene where Karloff engraves ancient symbols onto his chest with a knife is a stunner! A must.