Directed by
| Michael Carreras | ||
| Leslie Norman | ... | (uncredited) |
Writing Credits
| Michael Carreras | ... | (screenplay) (as Michael Nash) |
| Dennis Wheatley | ... | (novel) |
Cast (in credits order) complete, awaiting verification
| Eric Porter | ... | Capt. Lansen | |
| Hildegard Knef | ... | Eva Peters | |
| Suzanna Leigh | ... | Unity Webster | |
| Tony Beckley | ... | Harry Tyler | |
| Nigel Stock | ... | Dr. Webster | |
| Neil McCallum | ... | First Officer Hemmings | |
| Ben Carruthers | ... | Ricaldi (as Benito Carruthers) | |
| Jimmy Hanley | ... | Patrick, the Bartender | |
| James Cossins | ... | Nick, Chief Engineer | |
| Dana Gillespie | ... | Sarah | |
| Victor Maddern | ... | Mate | |
| Reg Lye | ... | Helmsman | |
| Norman Eshley | ... | Jonathan, the Prisoner | |
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Michael Ripper | ... | Sea Lawyer |
| Donald Sumpter | ... | Sparks, the Radioman | |
| Alf Joint | ... | Jason, a Crewman | |
| Charles Houston | ... | Braemer, a Crewman | |
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Shivendra Sinha | ... | Hurri Curri |
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Darryl Read | ... | El Diablo |
| Eddie Powell | ... | The Inquisitor | |
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Frank Hayden | ... | Sergeant |
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Mark Heath | ... | Customs Man |
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Horace James | ... | Customs Man |
| Rest of cast listed alphabetically: | |||
| Maxwell Craig | ... | Crewman (uncredited) | |
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Sylvana Henriques | ... | Traveller on Boat (uncredited) |
| Cynthia Myers | ... | Native Girl (uncredited) | |
Produced by
| Michael Carreras | ... | producer |
| Anthony Hinds | ... | executive producer (uncredited) |
| Peter Manley | ... | associate producer |
Music by
| Gerard Schurmann | ... | (as Gerard Schürmann) |
| Carlo Martelli | ... | (uncredited) |
Cinematography by
| Paul Beeson | ... | director of photography |
Editing by
| Chris Barnes | ||
Casting By
| Irene Lamb | ||
Art Direction by
| Arthur Lawson | ||
Costume Design by
| Carl Toms | ||
Makeup Department
| Elsie Alder | ... | hairdresser |
| George Partleton | ... | makeup artist |
Second Unit Director or Assistant Director
| Dominic Fulford | ... | assistant director |
| Dusty Symonds | ... | second assistant director (uncredited) |
Art Department
| Arthur Fehr | ... | modeller |
| Don Picton | ... | assistant art director |
| Michael Finlay | ... | painter (uncredited) |
| Mickey Pugh | ... | props (uncredited) |
Sound Department
| Roy Baker | ... | sound editor |
| A.W. Lumkin | ... | recording supervisor |
| Dennis Whitlock | ... | sound mixer (as Denis Whitlock) |
| Peter Margrave | ... | assistant boom operator (uncredited) |
Special Effects by
| Arthur Hayward | ... | special effects consultant |
| Robert A. Mattey | ... | special effects |
| Cliff Richardson | ... | special effects |
| Peter Hutchinson | ... | special effects assistant (uncredited) |
| John Richardson | ... | special effects (uncredited) |
| Roy Whybrow | ... | special effects (uncredited) |
Camera and Electrical Department
| H.A.R. Thomson | ... | camera operator (as Russell Thomson) |
Costume and Wardrobe Department
| Mary Gibson | ... | wardrobe |
Editorial Department
| James Needs | ... | supervising editor |
Music Department
| Philip Martell | ... | musical supervisor |
| The Peddlers | ... | songs sung by |
| Howard Blake | ... | music arranger: source music (uncredited) |
Script and Continuity Department
| Doreen Soan | ... | continuity |