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An Edwardian yacht in deep space races around the planets. There is a double agent in the TARDIS crew. The White Guardian warns the Fifth Doctor of great danger. Turlough must finally choose sides and at the end of the race lies the prize of Enlightenment.
Directed by Fiona Cumming
Peter Davison
The Doctor
Janet Fielding
Tegan Jovanka
Mark Strickson
Vislor Turlough
Cyril Luckham
The White Guardian
Valentine Dyall
The Black Guardian
Keith Barron
Striker
Christopher Brown
Marriner
Lynda Baron
Wrack
Leee John
Mansell
James McClure
First Officer
Tony Caunter
Jackson
Clive Kneller
Collier
Planet of the Apes
2001
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