Overview
A Scotland Yard investigator looks into four mysterious cases involving an unoccupied house.
Cast & Crew
Director: Peter Duffell
Cast: Christopher Lee, Peter Cushing, Denholm Elliott, Joanna Dunham, Tom Adams, Robert Lang, Joss Ackland, Wolfe Morris, Nyree Dawn Porter, Chloe Franks, Jon Pertwee, Ingrid Pitt
