 | Roger Moore als Otto Hecht |
 | Telly Savalas als Zeno |
 | David Niven als Professor Blake |
 | Stefanie Powers als Dottie Del Mar |
 | Claudia Cardinale als Eleana |
 | Richard Roundtree als Nat Judson |
 | Sonny Bono als Bruno Rotelli |
 | Elliott Gould als Charlie |
 | Anthony Valentine als Volkmann |
 | Siegfried Rauch als Braun |
 | Michael Sheard als Sergeant Mann |
 | Richard Wren als Reistoffer |
| Philip Locke als Vogel |
| Steve Ubels als Lantz |
 | Paul Picerni als Zeno's Man |
 | Paul Stassino als Zeno's Man |
| Manolis Peletis |
| Stassia Stakis |
 | Lykourgos Kallergis |
| Lambros Tsangas |
 | Mimi Denissi |
| Anne Marie Sten |
| Mary Dracopoulou |
| Elena Secota |
| Vanna Reville |
 | William Holden als POW (uncredited) |
| George P. Cosmatos | Director |
| Edward Anhalt | Screenplay |
| Richard S. Lochte | Screenplay |
| Richard S. Lochte | Story |
| George P. Cosmatos | Story |
| David Niven Jr. | Producer |
| Jack Wiener | Producer |
| Colin M. Brewer | Associate Producer |
| Lalo Schifrin | Original Music Composer |
| Gilbert Taylor | Director of Photography |
| Ralph Kemplen | Editor |
| Irene Lamb | Casting |
| Yvonne Blake | Costume Design |
| Eric Allwright | Makeup Artist |
| Paul Engelen | Makeup Artist |
| Derek Cracknell | Assistant Director |
| Ken Nightingall | Boom Operator |
| Nicholas Stevenson | Sound Editor |
| John Richardson | Special Effects |
| Vic Armstrong | Stunt Coordinator |
| Ray Andrew | Steadicam Operator |
| Derek V. Browne | Camera Operator |
| Bob Penn | Still Photographer |
| Hunt Downs | Unit Publicist |
| Richard Green | Location Manager |
| Arlene Phillips | Choreographer |
| Derek Ball | Sound Mixer |
| Michael Stringer | Production Design |
| John Graysmark | Supervising Art Director |
| Tracey Eddon | Stunt Double |
