You know, the devil has something here. Very pleasant. Dr. John Holden arrives in England to attend a paranormal convention where the recently deceased Professor Harrington had intended to expose Dr. Julian Karswell as being the leader of satanic cult. Upon learning of Harrington's death, Holden finds that the only link to the mysterious death and Karswell's alleged cult is an accused murderer called Rand Hobart, who is currently in a catatonic state. While Harrington's niece Joanna is convinced her uncle was felled by supernatural forces, Holden sets about debunking it all as pure hogwash....