"During the World War II, the prisoners of a German camp in a Greek island are trying to escape. They not only want their freedom, but also seek an ineffable treasure hidden in a monastery at the summit of the island's mountain."
Roger Moore
as Otto Hecht
Telly Savalas
as Zeno
David Niven
as Professor Blake
Stefanie Powers
as Dottie Del Mar
Claudia Cardinale
as Eleana
Richard Roundtree
as Nat Judson
Sonny Bono
as Bruno Rotelli
Elliott Gould
as Charlie
Anthony Valentine
as Volkmann
Siegfried Rauch
as Braun
Michael Sheard
as Sergeant Mann
Richard Wren
as Reistoffer
Philip Locke
as Vogel
Steve Ubels
as Lantz
Paul Picerni
as Zeno's Man
Paul Stassino
Manolis Peletis
as
Stassia Stakis
Lykourgos Kallergis
Lambros Tsangas
Mimi Denissi
Anne Marie Sten
Mary Dracopoulou
Elena Secota
Vanna Reville
William Holden
as POW (uncredited)
Richard S. Lochte
Story
George P. Cosmatos
Director
Screenplay
Edward Anhalt
Michael Stringer
Production Design
John Graysmark
Supervising Art Director
Derek Cracknell
Assistant Director
Derek V. Browne
Camera Operator
Lalo Schifrin
Original Music Composer
Arlene Phillips
Choreographer
Irene Lamb
Casting
John Richardson
Special Effects
Paul Engelen
Makeup Artist
Richard Green
Location Manager
David Niven Jr.
Producer
Ralph Kemplen
Editor
Yvonne Blake
Costume Design
Ken Nightingall
Boom Operator
Nicholas Stevenson
Sound Editor
Hunt Downs
Unit Publicist
Gilbert Taylor
Director of Photography
Vic Armstrong
Stunt Coordinator
Ray Andrew
Steadicam Operator
Bob Penn
Still Photographer
Colin M. Brewer
Associate Producer
Jack Wiener
Eric Allwright
Tracey Eddon
Stunt Double
Derek Ball
Sound Mixer