The present day: just as the Fourth Doctor and Leela arrive in Fetchborough, England, Professor Fendelman prepares to experiment on a fossilized skull which science says should not exist. The skull is actually an artefact of the Fendahl, a god-like being who feeds on the life force of others. It has begun to awaken and kill. Worse yet, others seek to exploit the Fendahl's dreadful power.
| Directing | George Spenton-Foster | Director |
| Writing | Chris Boucher | Writer |
| Writing | Robert Holmes | Script Editor |
| Production | Graham Williams | Producer |
| Sound | Dudley Simpson | Original Music Composer |
