Doctor Who
The Trial of a Time Lord, Part Four (The Mysterious Planet)
Season 23, Episode 4 · Aired 1986-09-27
Synopsis
Queen Katryca and the rest of the tribesmen arrive at the underground bunker where they confront Drathro The Immortal one. The Doctor tries to convince Drathro that he will repair the Black Light system while he fears that a possible upcoming explosion of the system could have the potential to destroy the universe.
In the series
This episode is part of Doctor Who (1963–) on BBC.
A time-traveling renegade in a police box — regeneration as infinite franchise life.
Key cast
- William Hartnell as The First Doctor
- Patrick Troughton as The Second Doctor
- Jon Pertwee as The Third Doctor
Also in season 23
- S23E01 The Trial of a Time Lord, Part One (The Mysterious Planet)
- S23E02 The Trial of a Time Lord, Part Two (The Mysterious Planet)
- S23E03 The Trial of a Time Lord, Part Three (The Mysterious Planet)
- S23E05 The Trial of a Time Lord, Part Five (Mindwarp)
- S23E06 The Trial of a Time Lord, Part Six (Mindwarp)
- S23E07 The Trial of a Time Lord, Part Seven (Mindwarp)