Season 21

Season 21 of Doctor Who aired between January 1984 and March 1984. This season starred Peter Davison as the Fifth Doctor, Janet Fielding as Tegan, Mark Strickson as Turlough and Nicola Bryant as Peri. This season also introduced Colin Baker as the Sixth Doctor, strangely deciding to regenerate the incumbent Doctor in the penultimate episode, making the final episode of this season Colin Baker's first full story as the Doctor.

Overview
It is at this point that the wheels of John Nathan-Turner's era begin to fall off. The behind-the-scenes bickering between JNT and script editor Eric Saward that was mire Colin Baker's era were only beginning to emerge at this point, but the combination of a low budget and a growing sense of apathy from the general public made Season 21 an unfortunate target of derision from some corners of the media. Peter Davison's departure was seen by many at the time as a bad sign, particularly as his predecessor had stayed on for so much longer, but the new Doctor was given a bad start with a very unstable initial personality that did not resonate well with fans. It's not all bad though, as this season brought the Daleks back in a big way (with a story featuring a body count higher than the first Terminator movie, Moffat should have been taking notes) and also sent the Fifth Doctor off with a fantastic final episode for his Doctor. It's a pity it wasn't the final episode of the season, as Colin Baker's first story was an absolute disaster.

Episodes

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