Scientist Adam Brake and his son Matthew arrive in the sleepy English village of Milbury to find it under the grip of weird psychic powers unleashed by the sinister village squire, Hendrick, and whose power they struggle to break.
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A well modulated exercise in mild scares - it originated as a television programme for children - that manages to tap into fairly erudite topics concerning ancient rites and mythology. As noted elsewhere, you'd be hard pressed to see this type of thing made for adults, let alone children, on modern British television unless the allusions were swapped out for much running around the stones instead.