A criminal psychologist invites three psychology students to his English countryside home to view some of his research on the criminal mind. Unbeknownst to the students, they are actually guinea pigs in a mind-control experiment he is conducting and the servants of the house are not what they appear to be.
| Directing | Malcolm Taylor | Director |
| Writing | Brian Clemens | Writer |
| Sound | Laurie Johnson | Music |
| Production | John Cooper | Producer |
| Editing | Al Pigden | Editor |
| Art | Henry Graveney | Production Design |
| Camera | Tony Mander | Camera Operator |
| Camera | Roy Simper | Camera Operator |
| Sound | Paul B. Clay | Music Coordinator |