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Luke Perry as Dr. Michael Ashton |
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Olivia D'Abo as Sgt. Penny Johnson |
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Roger Moore as Supt. Robert Ogilvie |
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Horst Buchholz as Dr. George Ashton |
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Tom Conti as Insp. John Cregar |
| Directing | Tom Kinninmont | Director |
| Writing | John Penney | Screenplay |
| Production | Jon Kramer | Executive Producer |
| Production | Romain Schroeder | Executive Producer |
| Production | Tom Reeve | Producer |
| Camera | Michael Garfath | Director of Photography |
| Art | Charlotte Taylor | Set Decoration |
| Production | Steve Beswick | Executive Producer |
| Production | Carla Thoeren | Associate Producer |
| Sound | Gast Waltzing | Original Music Composer |
| Production | Konstantin Thoeren | Producer |
| Costume & Make-Up | Cynthia Dumont | Costume Design |
| Writing | Desmond Bagley | Novel |
| Art | Simon Bowles | Production Design |
| Production | Meinir Stoutt | Line Producer |
| Art | Christian Huband | Art Direction |
| Editing | Martin Brinkler | Editor |
| Sound | Wolf Dietrich Peters-Vallerius | Production Sound Mixer |
| Sound | Aad Wirtz | Sound Re-Recording Mixer |
