Season 21



Season 21 of Doctor Who ran between 5th January 1984 and 30th March 1984. It starred Peter Davison as the Fifth Doctor. The last story, The Twin Dilemma introduced Colin Baker as the Sixth Doctor.

Overview
The season consisted of seven serials and 24 episodes. The Twin Dilemma, the first story with Colin Baker as the Sixth Doctor aired last in the season. Most episodes were the traditional 25 minute length, however due to coverage of the 1984 Winter Olympics, Resurrection of the Daleks was re-edited before airing and show as two 45-minute episodes.

Regulars

 * The Doctor - Peter Davison (Warriors of the Deep through The Caves of Androzani)
 * The Doctor - Colin Baker (Introduced in the last scene of The Caves of Androzani; first full appearance in The Twin Dilemma)
 * Tegan Jovanka - Janet Fielding (Warriors of the Deep through Resurrection of the Daleks)
 * Turlough - Mark Strickson (Warriors of the Deep through Planet of Fire)
 * Peri Brown - Nicola Bryant (introduced in Planet of Fire; Planet of Fire through The Twin Dilemma)

Semi-regulars

 * Kamelion - Gerald Flood (voice) (Planet of Fire)
 * The Master (Planet of Fire)

VHS

 * Warriors of the Deep
 * The Awakening/Frontios
 * Resurrection of the Daleks
 * Planet of Fire
 * The Caves of Androzani
 * The Twin Dilemma

DVD

 * Warriors of the Deep (part of Beneath the Surface)
 * Resurrection of the Daleks
 * The Caves of Androzani

Novelisations

 * Warriors of the Deep
 * The Awakening
 * Frontios
 * Planet of Fire
 * The Caves of Androzani
 * The Twin Dilemma