In this completely TARDIS-based story, the crew find themselves and their ship acting very strangely indeed. Blame runs high for the Ship's unusual behavior, until the Doctor realizes the TARDIS itself may be trying to warn them...
| Directing | Frank Cox | Director |
| Writing | David Whitaker | Writer |
| Sound | Ron Grainer | Music |
| Production | Verity Lambert | Producer |
| Production | Mervyn Pinfield | Associate Producer |
| Art | Raymond Cusick | Art Designer |
| Directing | Richard Martin | Director |
| Costume & Make-Up | Daphne Dare | Costume Design |
