Sorry, this episode is not currently available

Part 1

The Keeper of Traken is nearing the end of his long reign. Fearing a terrible evil is about to threaten the peace and harmony of his world, he requests the Doctor's help.

Release date:

25 minutes

Last on

Mon 10 Aug 1981 18:30


Role Contributor
Doctor WhoTom Baker
AdricMatthew Waterhouse
TremasAnthony Ainley
MelkurGeoffrey Beevers
The KeeperDenis Carey
NemanRoland Oliver
KassiaSheila Ruskin
LuvicRobin Soans
Nyssa Sarah Sutton
KaturaMargot Van Der Burgh
SeronJohn Woodnutt
DirectorJohn Black
Executive ProducerBarry Letts
ProducerJohn Nathan-Turner
WriterJohnny Byrne

Follow Doctor Who on Social Media

Peter Capaldi filming for series 10

For the latest news, photos, videos and more, follow us on:

TARDIS Index Files

TARDIS Index Files: Zygons

Find out what the TARDIS has on file about the Zygons.

Doctor Who Game Maker

Doctor Who Game Maker

Create and play your own amazing adventures in time and space!

Buy online

Buy online

Available on: DVD or Video download

From suppliers including: BBC Store

Where to buy