(From the publisher):
People of the future recreate the Middle Ages by destroying Machines and by subjecting anyone found with a machine or a knowledge of mechanics to severe punishment or death.(card catalog description)
England in the future - but an England that is less rather than more civilised. This is the time of The Changes - a time when people, especially adults, have grown to hate machines and returned to a more primitive lifestyle. It is a time of hardship and fear... When 16-year-old Geoffrey, a "weathermonger" starts to repair his uncle's motorboat, he and his sister Sally are condemned as witches. Fleeing for their lives, they travel to France - where they discover that everything is normal. Returning to England, they set out to discover why the country is under this mysterious spell. Only discovering the origin of the deadly magic will allow them to set the people free of its destructive influence.
(from the publisher)
This is the first book in the trilogy as it was written, but chronologically it comes after the events of the other two books. Some sources list it as the third book in the trilogy.
Original title: The Weathermonger
Genre: Fiction→ Children & Young Adult→ Science Fiction→ Futuristic Societies