Directed by
| Phil Karlson | ||
| Richard Widmark | ... | (uncredited) |
Writing Credits
| Alistair MacLean | ... | (based on the novel "The Secret Ways" by) |
| Jean Hazlewood | ... | (screenplay by) |
Cast (in credits order) complete, awaiting verification
| Richard Widmark | ... | Michael Reynolds | |
| Sonja Ziemann | ... | Julia | |
| Charles Regnier | ... | The Count | |
| Walter Rilla | ... | Jancsi | |
| Senta Berger | ... | Elsa | |
| Howard Vernon | ... | Colonel Hidas | |
 |
Heinz Moog | ... | Minister Sakenov |
| Hubert von Meyerinck | ... | Sheffler | |
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Oskar Wegrostek | ... | The Fat Man |
| Stefan Schnabel | ... | Border Official | |
| Elisabeth Neumann-Viertel | ... | Olga | |
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Helmut Janatsch | ... | Janos |
| John Horsley | ... | Jon Brainbridge | |
| Walter Wilz | ... | Peter | |
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Raoul Retzer | ... | Special Agent |
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György Kõváry | ... | Language Professor (as Georg Köváry) |
| Ady Berber | ... | Sandor | |
| Jochen Brockmann | ... | The Commandant | |
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Brigitte Brunmüller | ... | Waitress |
| Reinhard Kolldehoff | ... | The Count's Man | |
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Rudolf Rösner | ... | The Count's Man |
| Rest of cast listed alphabetically: | |||
| Herbert Fux | ... | Minor Role (uncredited) | |
Produced by
| Euan Lloyd | ... | associate producer |
| Richard Widmark | ... | producer (produced by) |
Music by
| John Williams | ... | (as Johnny Williams) |
Cinematography by
| Mutz Greenbaum | ... | (as Max Greene) |
Editing by
| Aaron Stell | ||
Art Direction by
| Isabella Schlichting | ||
| Werner Schlichting | ||
Makeup Department
| Rudolf Ohlschmidt | ... | makeup artist |
| Margarete Pitter | ... | hair stylist |
Production Management
| Herbert E. Mendelson | ... | production manager |
| Edward Muhl | ... | in charge of production |
| Georg von Block | ... | production manager |
Second Unit Director or Assistant Director
| André Farsch | ... | assistant director |
| Erich von Stroheim Jr. | ... | assistant director |
Sound Department
| Kurt Schwarz | ... | sound |
Stunts
| Bob Simmons | ... | stunt supervisor |
| Ken Buckle | ... | stunts (uncredited) |
Camera and Electrical Department
| Peter Allwork | ... | camera operator |
Costume and Wardrobe Department
| Leo Bei | ... | wardrobe (as Dr. Leo Bei) |
Music Department
| Joseph Gershenson | ... | music supervisor |
| Sam Perry | ... | composer: stock music (uncredited) |
| Ethmer Roten | ... | musician (uncredited) |
Script and Continuity Department
| Herta Friedl | ... | continuity |
Additional Crew
| Tibor Simanyi | ... | technical advisor |
| Robert Watts | ... | runner (uncredited) |
