Fair rating?Doctor Who· Season 13 · Episode 3
Terror of the Zygons, Part Three
The Doctor and the Brigadier begin to realise who the Zygon imposters among them are while Sarah discovers a secret tunnel to the underwater ship.
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#2In Season 13of 26 rated episodes
#18All-timeof 700 rated episodes
+0.2vs season avgSeason 13 averages 9.2
1975First airedSeptember 13, 1975
Guest stars
Lillias Walkeras Sister LamontRobert Russellas The Caber
John Woodnuttas Duke of ForgillKeith Ashleyas Zygon
Angus Lennieas Angus McRanaldRonald Goughas Zygon
Peter Symondsas SoldierCrew
Douglas CamfieldDirectorRobert Banks StewartWriter