When American author Edgar Allen Poe visits London, he is approached by British journalist Alan Foster who becomes the target of a particular wager. Not believing Poe's assertion that all of his macabre stories have been based on actual experience, Foster accepts a bet from Poe and his friend Sir Thomas Blackwood that he cannot spend an entire night in the Blackwood's haunted castle. Once installed in the abandoned castle, Foster discovers that he is not alone, as he is approached by various beautiful women and handsome men, and a doctor of metaphysics - who demise on the anniversary of their deaths!