From Tin Dog Podcast
The Tomb of the Cybermen is the first serial of fifth season in the British science fiction television series Doctor Who that originally aired in four weekly parts from 2 September to 23 September 1967 and is the earliest serial starring Patrick Troughton as the Second Doctor to exist in its entirety. It stars Frazer Hines and Deborah Watling as companions Jamie McCrimmon and Victoria Waterfield and features recurring villains the Cybermen, as well as the introduction of the Cyberman Controller and the Cybermats.
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