Doctor Who: Enlightenment (09/03/1983)

Production : BBC

Synopsis

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.

Peter Davison

Janet Fielding

Mark Strickson

Cyril Luckham