The Slitheen Excursion

In 1500 BC, King Actaeus and his subjects live in mortal fear of the awesome gods who have come to visit their kingdom in ancient Greece. The Doctor, visiting with university student June, knows they're not gods at all. They're aliens!
With June's enthusiastic help, the Doctor soon meets the travel agents behind this deadly package holiday company - his old enemies the Slitheen. But can he bring the Slitheen excursion to an end without endangering more lives? And how are events in ancient Greece linked to a modern-day alien plot to destroy what's left of the Parthenon?

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