Doctor Who 1963 - Season 23, Episode 12: The Trial of a Time Lord: Part Twelve
Trailer
This season, Colin Baker remains in a new experience by embodying the role of the Doctor in his last season. Perry Brown and Mel Bush join, played by Nicolas Bryant and Bonnie Langford. As time goes on, Michael Jaystone and Linda Bellingham emerge from different experiences as the first looks like Valeyard and the latter is like a research investigator.