A couple attempts to unravel a sinister plot within the English countryside estate of a dying man who has gathered an eclectic and notable group of house guests.
| Directing | Richard Marquand | Director |
| Production | David Foster | Producer |
| Writing | Paul Wheeler | Screenplay |
| Sound | Michael J. Lewis | Original Music Composer |
| Writing | Jimmy Sangster | Story |
| Editing | Anne V. Coates | Editor |
| Camera | Dick Bush | Director of Photography |
| Writing | Jimmy Sangster | Screenplay |
| Writing | Patrick Tilley | Screenplay |
| Camera | Alan Hume | Director of Photography |
