STORY PLOTLINE
Sir Reginald Styles, organiser of a world peace conference, narrowly survives an assassination attempt by a combat-uniformed guerrilla who vanishes like a ghost. Later the guerrilla is attacked by huge, ape-like creatures called Ogrons and found unconscious by UNIT troops in the grounds of the house.
The Doctor deduces that he comes from about two hundred years in the future and that a device found with him is a time machine.
DVD EXTRAS
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