|Tom Baker||The Doctor|
|Myra Frances||Lady Adrasta|
|Eileen Way||Madam Karela|
In episode one of the four-part story "The Creature From the Pit, the Doctor (Tom Baker) and Romana (Lalla Ward) answer a distress call from the planet Chloris. Upon their arrival, they discover that the planet's precious metal supply has been monopolized by the covetous, power-hungry Lady Adastra (Myra Frances), who keeps the inhabitants in line with the help of the sinister Huntsman (David Telfer) and his wolf weeds. Complicating matters are two other antagonists: bandit leader Torvin (John Bryans) and a huge, amorphous blob (hence the title of this adventure). Former Doctor Who director Morris Barry appears in a cameo role as Tollund. Written by David Fisher, "The Creature From the Pit, Episode 1" was originally telecast on October 27, 1979.
Audio commentary by actors Lalla Ward (Romana) and Myra Frances (Adastra), director Christopher Barry and visual effects designer Mat Irvine; Christopher Barry: director interview taped on location in the Wiltshire village of Aldbourne (19 mins); Team Erato visual effects crew discuss problems faced in building and operating Erato, with Mat Irvine, Steve Bowman, Steve Lucas and Morag McLean (15 mins); Animal magic archive on-set interview with Tom Baker (2 mins); Extended scene; Photo gallery (5 mins); PDF materials: raido times listings, production notes9