Dr Who - 123 - Time Flight - Synopsis
Dr Who - Peter Davidson - Series 19 - ep 7 - tep 123
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The Doctor investigates the disappearance of a Concorde in mid-flight and he becomes convinced that it has been transported back in time. Following it back into the Pleistocene era, he finds that the Master is behind a plot to control the power of an ancient race all but destroyed by a galactic war.