"A young man travels to Prague to join his new employer, unaware that he is being used as an espionage courier."
Dirk Bogarde
as Nicholas Whistler
Sylva Koscina
as Vlasta Simoneva
Robert Morley
as Col. Cunliffe
Leo McKern
as Simoneva
Roger Delgado
as Josef
Derek Fowlds
as Sun Bathing Man
Eric Pohlmann
as Golushha
John Le Mesurier
as Roger Allsop
Noel Harrison
as Johnnie
Amanda Grinling
as Cunliffe’s Secretary
Philo Hauser
as Vicek
John Junkin
as Clerk in Opening Scene
Jill Melford
as Lorna
Derek Nimmo
as Fred
Richard Vernon
as Roddinghead
Brook Williams
as Leon
Gertan Klauber
as Technician in Czech Glass Factory
Richard Pasco
as Plakov
Alan Tilvern
as Simenova's Assistant
Norman Bird
as Employment Exchange Clerk
Andre Charisse
as Waiter
Frank Finlay
as British Embassy Porter
Sandra Hampton
as Russian Dancer
Harriet Medin
as Hotel Receptionist
William Mervyn
as Passenger on Plane
Tiberio Mitri
as The Milkman
George Pravda
as Pravelko
Robert Rietti
as
John Standing
as Men's Room Attendant
Eddie Boyce
as Man in Labour Exchange
Jim Brady
as Worker in Canteen
Igo Meggido
as Russian Dancer (uncredited)
Reg Thomason
as Diner in Restaurant (uncredited)
Pietro Tordi
as Old man at the swimming pool (uncredited)
Lionel Davidson
Novel
Angelo Francesco Lavagnino
Original Music Composer
Ralph Thomas
Director
Syd Cain
Art Direction
Lukas Heller
Screenplay
Alfred Roome
Editor
Ernest Steward
Director of Photography
Betty E. Box
Producer
Yvonne Caffin
Costume Design
W.T. Partleton
Makeup Artist
Stella Rivers
Hairdresser
Giorgio Gentili
Assistant Director
Simon Relph
Don Sharpe
Sound Editor
John W. Mitchell
Sound Recordist
Bill Daniels
James Bawden
Camera Operator
Earl St. John
Executive Producer
