London, 1880. "I'm dreadfully afraid someone is threatening to kill my wife ..." When accounts clerk Ernest Stibbins approaches the World's End investigation bureau with wild claims that his wife Albertina has been warned by her spirit guides that someone is out to harm her, the bureau's owner Lily Raynor and her new employee Felix Wilbraham are initially sceptical. How are the two private enquiry agents supposed to investigate threats from beyond the grave? But after she attends a séance at the Stibbins family home, Lily comes to realize that Albertina is in terrible danger. And very soon so too is Lily herself ...