When landlord Semple Ridgedon finds a society of murderers lodging in one of his buildings, he tears the place down and rebuilds it in a modern way. But the evil ghosts appear anew and confront Ridgedon with his promise to join them in their cult of murder.; On the behalf of his friend Hans Buloff, Lawrence Avery, "famous investigator of psychic phenomena", looks into the strange happenings at Buloff mansion. Avery encounters Buloff's vampire bride and her creepy butler. The investigator manages to foil all evil plans.; Trapped in a mirror world, two men face a flesh-eating monster. The horror subsides when the magical mirror is smashed from the outside.