A serial killer terrorizes London. Each victim is found with a telegram signed "The Marquis." There seems to be no other common thread between the victims, and Scotland Yard is baffled. Novelist and amateur sleuth, Paul Temple, is warned to stay away from the case, but he and his glamorous wife Steve can never refuse a good mystery.
Paul Temple
Steve Temple
Sir Graham Forbes
Bradley
Inspector Ross
Storey
Sakki the Valet
Roddy Carson
Slater
Sir Felix Raybourne
Servant Abdullah
Sir Graham's Police Aide
Sammy Wren
Rita Cartwright
Barmaid
Old 'Em
Rifle-range Attendant
Police Sergeant
Secretary
Mobile Policeman
Police Constable
Pinball Machine Player
Director
Writer
Producer
Music
Director of Photography
Editor
Art Direction
Makeup Artist
Hairdresser
Production Manager
Assistant Director
Sound Recordist
Wardrobe Master
Camera Technician
Conductor
Continuity
Presenter