Fair rating?Doctor Who· Season 4 · Episode 22
The Underwater Menace, Part Four
With Zaroff's plan nearing completion, the Doctor and Ben realise the only way to save the world is to destroy Atlantis.
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#14In Season 4of 43 rated episodes
#496All-timeof 700 rated episodes
+0.2vs season avgSeason 4 averages 8.1
1967First airedFebruary 4, 1967
Guest stars
Colin Jeavonsas DamonCatherine Howeas Ara
Joseph Fürstas Professor Zaroff
Graham Ashleyas OverseerP.G. Stephensas Sean
Noël Johnsonas King Thous
Tony Handyas Zaroff's Guard
Paul Anilas Jacko
Crew
Julia SmithDirector
Geoffrey OrmeWriter