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.

Genres

Cast

John Bentley

Paul Temple

Patricia Dainton

Steve Temple

Peter Gawthorne

Sir Graham Forbes

Valentine Dyall

Bradley

Ronald Leigh-Hunt

Inspector Ross

Grey Blake

Storey

Dan Jackson

Sakki the Valet

Robert Urquhart

Slater

Christopher Lee

Sir Felix Raybourne

Michael Mulcaster

Sir Graham's Police Aide

Andreas Malandrinos

Sammy Wren

Vi Kaley

Old 'Em