A Scotland yard detective and a nosy American photographer investigate a series of bizarre deaths in a small English village which are connected to a local literacy professor whom has the psychic ability to talk to dead spirits and somehow uses his gift to direct the entities to his pet black cat who becomes his instrument for revenge against those who have wronged him.
[Sergeant Wilson sees Jill coming out of an underground crypt] Sergeant Wilson: Miss, let me give you some advice, don't go down there anymore. Jill Trevers: Why not? Sergeant Wilson: My Grandad used to tell me when I was a lad that the dead like to be left alone. They're not very hospitable.
The role of Professor Miles was intended for Donald Pleasence.