Trial of a Time Lord: The Mysterious Planet

TV Season 23, Serial 1

Aired: 6 September 1986 - 27 September 1986

The Trial is all of Season 23, although it’s divided into four stories. This one is the “past” segment of the trial, clearly set a while since “Revelation,” as Peri is dressing far more conservatively, and seems more comfortable with the Doctor. It also introduces the Valeyard, and Sabalom Glitz in the flashback. The show is back to half-hour-ish episodes, airing once per week, but only 14 to a season, a dramatic reduction. It's also back to airing in the fall, after the 18-month "rest" ordered by Michael Grade.