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Richard Harris as John Carter |
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Ann Turkel as Susan Beresford |
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Gordon Jackson as Dr. Marston |
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John Vernon as Luis Carreras |
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David Janssen as Charles Conway |
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Burgess Meredith as Van Heurden |
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Leigh Lawson as Tony Cerdan |
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Robert Flemyng as Capt. Bullen |
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Keith Baxter as Preston |
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Robert Beatty as Dr. Taubman |
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Dorothy Malone as Mrs. Skinner |
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John Carradine as Fairweather |
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Christopher Chittell as Rogers |
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Richard Cox as Browning |
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Michael Howard as Benson |
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Hugh Rouse as Captain – Unicorn 1 |
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Ian Hamilton as 1st Officer – Unicorn 1 |
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Ian Yule as McCloskey |
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Paul Malherbe as Gomez |
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Michael Fisher as Dexter |
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Lyn Hooker as Female Nurse |
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David H. Watkins as Miguel |
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Stephen Turner as Croupier |
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Yanko Gluscevic as Croupier |
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Philip Boucher as Agente |
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Steven Gurney as Radio Operator – Unicorn 1 |
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Dennis Madeley as 1st Engineer |
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Larry Taylor as Attacker |
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Billy Crauser as Attacker |
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John Sullivan as Attacker |
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Joe Powell as Male Nurse |
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Jannie Wienand as Attacker |
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Roy Scammell as Attacker |
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Jack Cooper as Attacker |
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Danny Keogh as Attacker |
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Shelagh Holliday as Passenger |
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Gabriel Bayman as Passenger |
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Marjorie Gordon as Passenger |
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Olive King as Passenger |
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Maureen Anstey as Passenger |
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Paddy Canavan as Passenger |
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Tanya Bader as Passenger |
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Vivienne Drummond as Passenger |
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Marina Christelis as Passenger |
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David Drummond as Passenger |
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Colin Sutcliffe as Passenger |
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Peter Tobin as Passenger |
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David Bailie as Younger Terrorist in Car (uncredited) |
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John Parsonson as Attacker (uncredited) |
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Tony Steedman as Assassin (uncredited) |
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Frank Wastell as Bartender (uncredited) |
| Writing | Alistair MacLean | Novel |
| Directing | Ashley Lazarus | Director |
| Writing | Chris Bryant | Writer |
| Writing | Stanley Price | Writer |
| Writing | Allan Scott | Writer |
| Production | André Pieterse | Producer |
| Production | Murray Frank | Executive Producer |
| Production | Philo Pieterse | Executive Producer |
| Production | Robert Porter | Associate Producer |
| Sound | Jeff Wayne | Original Music Composer |
| Camera | Kenneth Higgins | Director of Photography |
| Editing | Ralph Kemplen | Editor |
| Art | Frank White | Art Direction |
| Costume & Make-Up | George Frost | Assistant Makeup Artist |
| Costume & Make-Up | Anni Taylor | Assistant Makeup Artist |
| Costume & Make-Up | Richard Mills | Makeup Artist |
| Costume & Make-Up | Wally Schneiderman | Makeup Artist |
| Costume & Make-Up | Colin Polson | Hairdresser |
| Production | Oliver Nurock | Unit Manager |
| Production | Douglas Twiddy | Production Manager |
| Directing | Robert Porter | Second Unit Director |
| Directing | Brian W. Cook | First Assistant Director |
| Directing | Peter Bennett | Second Assistant Director |
| Directing | Terry Needham | Second Assistant Director |
| Editing | Peter Davies | Assistant Editor |
| Production | Louis Harris | Location Manager |
| Sound | Jeff Wayne | Conductor |
| Sound | Milton Okun | Music Consultant |
| Directing | Angela Allen | Continuity |
| Directing | Cheryl Frootko | Continuity |
| Crew | Milton Okun | Presenter |
| Crew | André Pieterse | Presenter |
| Directing | Freddie Francis | Director |