Season 9, Episode 5 | 6 parts | First broadcast: 20 May – 24 June 1972 | Writer: Robert Sloman and Barry Letts | Director: Paul Bernard
Cast
- Jon Pertwee as the Doctor
- Katy Manning as Jo Grant
- Roger Delgado as the Master
- Ian Collier as Stuart Hyde
Summary
The Master, posing as a scientist working on a revolutionary energy experiment called TOMTIT, is secretly attempting to summon a reality-warping time creature called Kronos to gain mastery over time itself. Pursuing his rival back to ancient Atlantis, the Doctor must stop the Master from wielding Kronos’s power before the resulting chaos destroys the past and unravels the present.
Interesting Facts
- This serial closes out Season 9 and marks Roger Delgado’s penultimate appearance as the Master in the television series before his death the following year.
- It features an extended trip to ancient Atlantis, one of the few times the Pertwee-era Doctor was permitted extensive historical, rather than purely contemporary, adventures.
- The story introduces the concept of a TARDIS materialising inside another TARDIS, a device later reused in subsequent Doctor Who stories.
- Its philosophical dialogue between the Doctor and Kronos about the nature of time drew both praise for ambition and criticism for pacing from contemporary reviewers.
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