The Doctor takes Ace on an initiative test to a strange Victorian old house where she is forced to confront her darkest fears.
| Writing | Marc Platt | Writer |
| Directing | Alan Wareing | Director |
| Costume & Make-Up | Ken Trew | Costume Design |
| Sound | Mark Ayres | Original Music Composer |
| Art | Nick Somerville | Production Design |
| Editing | Hugh Parson | Editor |
| Costume & Make-Up | Joan Stribling | Makeup Artist |
| Writing | Andrew Cartmel | Script Editor |
| Art | Oliver Elmes | Graphic Designer |
| Crew | Paul Heasman | Stunt Coordinator |
| Camera | Spencer Payne | Camera Supervisor |
| Sound | Keith Bowden | Sound |
| Crew | Dick Mills | Special Sound Effects |
| Lighting | Henry Barber | Lighting Director |
| Sound | Scott Talbott | Sound |
| Production | John Nathan-Turner | Producer |
| Production | Gary Downie | Production Manager |
| Production | Valerie Whiston | Production Assistant |
| Visual Effects | Dave Chapman | Visual Effects |
| Visual Effects | Malcolm James | Visual Effects Designer |
| Production | Darren J. Perry | Production Runner |
