Episode 3
S10 E3 January 13, 1973 0h 25m
★ 8.0
Source:
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Guest Stars
William Hartnell
The Doctor
Patrick Troughton
The Doctor
Nicholas Courtney
Lethbridge-Stewart
John Levene
Sergeant Benton
Rex Robinson
Dr. Tyler
Roy Purcell
President of the Council
Graham Leaman
Time Lord
Stephen Thorne
Omega
