Thomas Jerome Newton is an alien who has come to Earth in search of water to save his home planet. Aided by lawyer Oliver Farnsworth, Thomas uses his knowledge of advanced technology to create profitable inventions. While developing a method to transport water, Thomas meets Mary-Lou, a quiet hotel clerk, and begins to fall in love with her. Just as he is ready to leave Earth, Thomas is intercepted by the U.S. government, and his entire plan is threatened.
| Directing | Nicolas Roeg | Director |
| Writing | Paul Mayersberg | Screenplay |
| Writing | Walter Tevis | Novel |
| Production | Michael Deeley | Producer |
| Production | Barry Spikings | Producer |
| Production | Si Litvinoff | Executive Producer |
| Sound | John Phillips | Original Music Composer |
| Sound | Stomu Yamashta | Original Music Composer |
| Camera | Anthony B. Richmond | Director of Photography |
| Editing | Graeme Clifford | Editor |
| Art | Brian Eatwell | Production Design |
| Costume & Make-Up | May Routh | Costume Design |
| Sound | Robin Gregory | Sound Recordist |
| Production | John Peverall | Associate Producer |
| Art | Simon Wakefield | Set Decoration |
| Crew | Ellis Burman Jr. | Makeup Effects |
| Costume & Make-Up | Linda DeVetta | Makeup Artist |
| Costume & Make-Up | Martin Samuel | Hairstylist |
| Production | Roy Stevens | Production Manager |
| Directing | Kip Gowans | Assistant Director |
| Art | Tom Raeburn | Property Master |
| Sound | Terry Sharratt | Boom Operator |
| Crew | Richard Graydon | Stunt Coordinator |
| Lighting | Martin Evans | Gaffer |
| Camera | Gordon Hayman | Camera Operator |
| Camera | Chuck White | Still Photographer |
| Directing | Susanna Merry | Continuity |
| Production | Marilyn Clarke | Production Coordinator |
| Production | Ronald Cook | Production Accountant |
| Sound | Michael Ellis | Sound Editor |
| Crew | Matthew Norris | Stunt Double |
| Directing | Michael Stevenson | Second Assistant Director |
