Bernard Knowles (Director) · Kenneth R. Hayles (Screenplay)
Tom Conway
Tom Martin
Delphi Lawrence
Jean Larson
Brian Worth
Geoffrey Blake
Michael Balfour
Barney Wilson
Marianne Stone
Mrs Wilson
Campbell Cotts
Robert Coburn
John Horsley
Det. Insp. Taylor
Ronan O'Casey
Stefan Gordoni
Launce Maraschal
J.D. Everleigh
Colin Tapley
Lord Valchrist
Alan Gifford
Henry Warburg
Grace Arnold
Lady Hawksley
John Colicos
Mustachioed Henchman (as John Collicos)
Mayura
Yasmina
John Watson
Detective Sgt. Grant
Reggie Morris
Cleanshaven Henchman (as Reg Morris)
Derrick Whittingham
Print Shop Manager
Charles Hammond
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Special investigator Duke Martin is in London to investigate the authenticity of a rare postage stamp called the Barbados Overplate. Someone is willing to commit murder to get his or her hands on the stamp, which puts a crimp in Duke's efforts to romance every beautiful woman he meets.
