Tom Martin

Tom Conway

Jean Larson

Delphi Lawrence

Geoffrey Blake

Brian Worth

Barney Wilson

Michael Balfour

Woman Cleaner

Marianne Stone

Coburn, Stamp Dealer

Campbell Cotts

Det. Insp. Taylor

John Horsley

Stefan Gordoni, Engraver

Ronan O'Casey

J.D. Everleigh

Launce Maraschal

Lord Valchrist

Colin Tapley

Henry Warburg

Alan Gifford

Lady Hawksley

Grace Arnold

Mustachioed Henchman (as John Collicos)

John Colicos

Yasmina

Mayura

Detective Sgt. Grant

John Watson

2nd Man

Reg Morris

Print Shop Manager

Derrick Whittingham

Cleanshaven Henchman (as Reg Morris)

Reggie Morris

Garage Attendant

Frank Pemberton

Fingerprinter

Neil Wilson

Hawksley Maid

Olive Kirby

Receptionist

Rosamund Waring

Air Stewardess

Margaret Rowe

Girl at Airport

Maureen Connell