Peter Pratt

After an encounter with the Master, an airline stewardess named Tegan Jovanka becomes an unwitting stowaway aboard the TARDIS as it travels to the planet Logopolis. There, the Doctor discovers that the Master's interference with the Logopolitans' advanced mathematics has unleashed a wave of entropy which threatens to consume the entire universe.

A look at the subtle (and not so subtle!) links to the show's past and future contained within the story of The Five Doctors.

Summoned back to Gallifrey, the Doctor is framed for the assassination of the Time Lord President. To prove his innocence, he must stand for election himself, uncover the traitor in the Time Lord High Council, fight a hooded killer in a nightmare cyberspace world of his enemy's devising and battle against an old foe now out to destroy the Time Lords: The Master.

The nightmare experience of a young American housewife, confronted by a dark secret from her childhood.

Albert, a shy and repressed young man who lives with his mother, is persuaded to go for "a night out" with his workmates; it turns nightmarish.

Half-fae-half-mortal shepherd Strephon wants to wed shepherdress Phyllis, but, although she reciprocates his feelings, she has a dilemma — she is so beautiful that all of the House of Lords, as well as her guardian, the Lord Chancellor, are also desirous of marriage.

Shaw Taylor warns viewers to be on the lookout for a dangerous individual known as the Master.

Rivalry at a local Gilbert and Sullivan Society over who will play Jack Point in the Silver Jubilee production. Rowland Matthews has always been the main star, but he is getting on, and the young Clive Bates is a strong rival.