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Anthony Hopkins as Philip Calvert |
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Robert Morley as Uncle Arthur |
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Nathalie Delon as Charlotte |
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Jack Hawkins as Sir Anthony Skouras |
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Corin Redgrave as Hunslett |
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Derek Bond as Lord Charnley |
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Ferdy Mayne as Lavorski |
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Maurice Roëves as Lt. Williams - Helicopter Pilot |
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Leon Collins as Tim Hutchinson |
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Wendy Allnutt as Sue Kirkside |
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Peter Arne as Capt. Imrie |
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Oliver MacGreevy as Quinn |
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Jon Croft as Durran |
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Tom Chatto as Lord Kirkside |
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Charlie Stewart as Sgt. Macdonald |
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Edward Burnham as Macullum |
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Del Henney as Dungeon Guard |
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Bill Brandon as Thug (uncredited) |
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Harry Fielder as Thug on Boat (uncredited) |
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Martin Grace as Thug (uncredited) |
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Charles Gray as Sir Anthony Skouras (voice) (uncredited) |
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Prentis Hancock as Agent (uncredited) |
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Barrie Hesketh as Seaman (uncredited) |
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George Leech as Thug (uncredited) |
| Directing | Étienne Périer | Director |
| Writing | Alistair MacLean | Novel |
| Crew | Walter Stott | Compositor |
| Camera | Arthur Ibbetson | Director of Photography |
| Production | Denis Holt | Associate Producer |
| Editing | John Shirley | Editor |
| Costume & Make-Up | Sue Yelland | Costume Design |
| Production | Ted Lloyd | Production Supervisor |
| Production | Elliott Kastner | Producer |
| Sound | Angela Morley | Original Music Composer |
| Art | Jack Maxsted | Art Direction |
| Production | Malcolm J. Christopher | Location Manager |
| Camera | David Wynn-Jones | Assistant Camera |
| Crew | Les Hillman | Special Effects |
