The TARDIS is hijacked by a time-sensitive Tharil, Biroc. Other Tharils are being held on board the Privateer, captained by Rorvik, that is trapped in the void.
The only other thing inside the void is a stone gateway which leads into a banqueting hall. This is the domain of the Tharils. The Tharils were once rulers of a vast empire, but their human slaves built the Gundan robots which killed the Tharils.
Romana is taken prisoner by Captain Rorvik, but is later freed by one of the Tharils, Lazlo. Captain Rorvik plans to blast his way out of the void. The blast from the engines is reflected by the mirrors of the gateway which shatters the hull, freeing the Tharils.
The Tharils return to E-space with Romana and K-9 whilst the Doctor and Adric, inside the TARDIS, are blown back into N-space.
Regular castVoice of K-9: John Leeson; Romana: Lalla Ward; Adric: Matthew Waterhouse;
Guest castCaptain Rorvik: Clifford Rose; Packard: Kenneth Cope; Lane: David Kincaid; Aldo: Freddie Earlie; Royce: Harry Waters; Sagan: Vincent Pickering; Biroc: David Weston (1,3-4); Lazlo: Jeremy Gittins (2-4);
Uncredited cast: Second Gundan: Pat Gorman; Tharils: (all 3) Pat Gorman, Mike Mungarvan, Erika Spotswood;
|BBC 1||542||Part One||Sat 3 January 1981||5:20 pm - 5:45 pm||7.1M||88th|
|BBC 1||543||Part Two||Sat 10 January 1981||5:20 pm - 5:45 pm||6.7M||93rd|
|BBC 1||544||Part Three||Sat 17 January 1981||5:20 pm - 5:45 pm||8.3M||59th|
|BBC 1||545||Part Four||Sat 24 January 1981||5:20 pm - 5:45 pm||7.8M||69th|
This programme does not have any outside filming
Television Centre Studio 1; Television Centre Studio 3;
Bloopers and mistakes
This programme has no bloopers or mistakes. It's probably not perfect, just that they haven't been found or pointed out yet.
Notes and trivia
Lalla Ward and K-9 leave at the end of this story.
This was the first story to have Ceefax subtitles.
This programme has no other working titles, or they have not been yet been entered.