Directed by: George Spenton-Foster
Produced by: Graham Williams
Written by: Chris Boucher
An anachronistic twelve-million-year-old human skull has been discovered by archaeologists and is now being used by Professor Fendelman in his time scanner experiments at Fetch Priory in contemporary England. The skull is actually an artifact of the Fendahl, an ancient creature that feeds on the life force of others.
Drawn by the operation of the scanner, the Doctor and Leela arrive as the experiments reach a peak.........
Audio Commentary by actors Tom Baker (the Doctor), Louise Jameson (Leela) and Wanda Ventham (Thea Ransome) and Edward Arthur (Adam Colby)
After Image "Making Of" featuring Louise Jameson, Edward Arthur, Wanda Ventham, script editor Anthony Read and visual effects designer Colin Mapson (26 mins)
Deleted and Extended Scenes
Monochrome video recording (11 mins)
Trailer Original BBC1 trailer from 1977
Photo Gallery (5 mins)
Easter Egg (1 min)
Radio Times Listings (PDF DVD-ROM)
Production Note Subtitles
Digitally remastered picture and sound quality