Directed by
| Charles Frend | ||
| Bruno Vailati | ||
Writing Credits
| Alberto Ca' Zorzi Noventa | ... | (screenplay by) |
| Adriano Belli | ... | (writer) |
| Pino Belli | ... | (writer) |
| Augusto Frassinetti | ... | (writer) |
| Bruno Vailati | ... | (writer) |
| Jack Whittingham | ... | (screenplay) |
Cast (in credits order)
| Lilli Palmer | ... | Dr. Lygia da Silva | |
| James Mason | ... | Captain Blayne | |
| Gabriele Ferzetti | ... | Leonardi | |
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Alberto Lupo | ... | Magri |
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Valeria Fabrizi | ... | Susanne |
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Renato De Carmine | ... | Ghedini |
| Daniele Vargas | ... | Brauzzi | |
| Andrew Keir | ... | O'Brien | |
| Gabriele Tinti | |||
| Jeremy Burnham | |||
| Paul Muller | ... | Police Commander | |
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Gianni Solaro | ... | Admiral Mendoza |
| Andrea Checchi | ... | Micheluzzi | |
| Geoffrey Keen | ... | Hodges | |
| Rest of cast listed alphabetically: | |||
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Fortunato Arena | ... | Italian Marine |
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Giovanni Cianfriglia | ... | Italian Marine |
| Fanfulla | ... | (as Luigi Visconti) | |
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Gaia Germani | ||
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Anna McDonald | ||
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Davide Montemurri | ... | (as Davide Montemuri) |
| Gino Pernice | |||
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Aldo Pini | ||
| Mimmo Poli | ... | Nightclub Owner | |
| Sal Borgese | ... | Nightclub Visitor (uncredited) | |
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Amerigo Castrighella | ... | Submarine crew member (uncredited) |
Produced by
| Bruno Vailati | ... | producer |
Music by
| Roberto Nicolosi | ||
| Carlo Rustichelli | ||
Cinematography by
| Gábor Pogány | ||
Editing by
| Giancarlo Cappelli | ||
Art Direction by
| Giorgio Giovannini | ||
Set Decoration by
| Massimo Tavazzi | ||
Costume Design by
| Giorgio Desideri | ||
Makeup Department
| Euclide Santoli | ... | makeup artist |
Production Management
| Armando Govoni | ... | unit production manager |
| Thomas Sagone | ... | production manager (as Tommasso Sagone) |
| Averoe Stefani | ... | unit production manager |
Second Unit Director or Assistant Director
| Pino Belli | ... | second unit director |
Art Department
| Tullio Lullo | ... | property master |
Sound Department
| Kurt Doubrowsky | ... | sound |
Stunts
| Fortunato Arena | ... | stunts (uncredited) |
| Sal Borgese | ... | stunts (uncredited) |
| Giovanni Cianfriglia | ... | stunts (uncredited) |
Camera and Electrical Department
| Vittorio Bernini | ... | camera operator |
| Mario Capriotti | ... | camera operator |
| Masino Manunza | ... | underwater photography |
Editorial Department
| Cleofe Conversi | ... | assistant editor |
Music Department
| Franco Ferrara | ... | conductor |