A group of people in an old dark house are terrorized by a mysterious hooded figure dressed in black who proceeds to kill them off one by one.
Reggie Ogden
Sonia Bryant
Sir Richard Bryant
Moya Silverton
Jim Silverton
Mrs. Bascomb
Detective Inspector Carr
Chief Inspector Elliot
Chief Inspector Fleming
Wallis
Beverley Kent
Willit
Sir Edward Hulme KC