Directed by
| Terence Young | ||
Writing Credits
| N.A. Bronsten | ... | (original story) and |
| Paul Tabori | ... | (original story) |
| Terence Young | ... | (written by) |
Cast (in credits order)
| Jack Warner | ... | Inspector Peterson | |
| Nadia Gray | ... | Kara Niemann | |
| John McCallum | ... | Dr. Nils Ahlen | |
| Anthony Dawson | ... | Sven Nystrom | |
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Mary Laura Wood | ... | Helga Ahlen |
| Naima Wifstrand | ... | Baroness Erland | |
| Norman MacOwan | ... | McTavis, ferry pilot | |
| Alfred Maurstad | ... | Trerik | |
| Martin Boddey | ... | Chief of the Lost Valley | |
| Christopher Lee | ... | Det. Holt | |
| Ewen Solon | ... | Det. Anderson | |
| Gösta Cederlund | ... | Prof. Lind | |
| Sten Lindgren | ... | Director-General of the Research Inst. | |
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Kurt-Olof Sundström | ||
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Peter Blitz | ... | Anders |
| Rest of cast listed alphabetically: | |||
| Fritiof Billquist | ... | Colonel Strand (uncredited) | |
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Sarah Crawford | ... | Noma (uncredited) |
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Holger Kax | ... | Minor Role (uncredited) |
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Natasha Sokolova | ... | Minor Role (uncredited) |
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Molly Warner | ... | Frau Lind (uncredited) |
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George Willoughby | ... | Bertil (uncredited) |
Produced by
| N.A. Bronsten | ... | producer (as Nat Bronsten) |
| Robert L. Lippert | ... | executive producer (uncredited) |
| George Willoughby | ... | associate producer (as George W. Willoughby) |
Music by
| Nino Rota | ||
Cinematography by
| Harry Waxman | ... | (lighting cameraman) |
Editing by
| Lito Carruthers | ||
Art Direction by
| J. Elder Wills | ... | (as J. Elder Wills) |
Makeup Department
| George Blackler | ... | makeup artist |
Production Management
| Kenneth Horne | ... | production manager (as Ken Horne) |
Second Unit Director or Assistant Director
| Basil Keys | ... | assistant director |
| Denis O'Dell | ... | second assistant director (uncredited) |
Sound Department
| Graeme Hamilton | ... | sound editor |
| W.H. Lindop | ... | sound (as W. Lindop) |
| Gordon K. McCallum | ... | sound (as Gordon McCallum) |
Special Effects by
| Philippo Guidobaldi | ... | special effects (as Guidobaldi) |
| Bill Warrington | ... | special effects |
Camera and Electrical Department
| James Bawden | ... | camera operator (as Jim Bawden) |
| Gunnar Melle | ... | additional mountain photography |
Music Department
| Muir Mathieson | ... | music director |
Additional Crew
| Arthur Alcott | ... | production controller |
| Helge Lund | ... | animal director |
