A crew of interplanetary archaeologists is threatened when an alien creature impregnates one of their members, causing her to turn homicidal and murder them one by one.
| Writing | Nick Maley | Screenplay |
| Directing | Norman J. Warren | Director |
| Writing | Gloria Maley | Screenplay |
| Sound | John Metcalfe | Music |
| Production | Richard Gordon | Producer |
| Production | David Speechley | Producer |
| Production | Rose Tobias Shaw | Casting |
| Camera | John Metcalfe | Director of Photography |
| Production | Peter M. Schlesinger | Executive Producer |
| Crew | Peter Brayham | Stunt Coordinator |
| Crew | Philip Sharpe | Special Effects |
| Sound | Jim Elderton | Sound Editor |
| Sound | Simon Okin | Sound Recordist |
| Directing | Gary White | First Assistant Director |
| Costume & Make-Up | Nick Maley | Special Effects Makeup Artist |
| Art | Hayden Pearce | Production Design |
| Editing | Peter Boyle | Editor |
| Sound | John Scott | Original Music Composer |
| Costume & Make-Up | Nick Maley | Makeup Supervisor |
| Camera | Dick Pope | Camera Operator |
| Production | Lorraine Goodman | Production Assistant |
| Art | Ian Watson | Assistant Art Director |
| Costume & Make-Up | Sheila Thomas | Key Makeup Artist |
| Directing | Alison Thorne | Continuity |
| Editing | Chris Blunden | Assistant Editor |
| Directing | Adrian Rawle | Second Assistant Director |
| Art | Alan Board | Construction Manager |
| Art | Brian Wells | Property Master |
| Camera | Dennis Lewis | Grip |
| Art | Brian Winterborn | Property Buyer |
| Directing | Derek Harrington | Third Assistant Director |
| Lighting | George Boner | Gaffer |
| Camera | Barry Peake | Still Photographer |
| Production | Patrick Isherwood | Production Accountant |
| Production | Hayden Pearce | Production Designer |
| Production | Rose Tobias Shaw | Casting Director |
| Costume & Make-Up | Ross Carver | Hairdresser |
| Sound | Paul Botham | Boom Operator |
| Camera | John Simmons | Focus Puller |
| Costume & Make-Up | Derry Haws | Assistant Makeup Artist |
| Camera | Mike Metcalfe | Clapper Loader |
| Sound | Chris Reed | Assistant Sound Editor |
