The Doctor and Sarah return to London in the present day only to find the city strangely deserted, while nearby UNIT are dealing with a series of monster appearances.
Did You Know?
This was the first episode to bear an individual title since Doctor Who: The O.K. Corral
(1966), the final episode of the four-part story "The Gunfighters", which was the last Doctor Who
(1963) adventure to have individual episode titles. See more
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