Pentworth Series by James Follett

In Pentworth supplies of electricity, gas and water are mysteriously diminishing. Then, suddenly, a force field surrounds the town, through which no-one can pass, and the population is completely cut off from the outside world by an unknown force.

Life in Pentworth hasn't been the same since it was surrounded by a force field and cut off from the outside world. But life takes an even more sinister turn when a twisted Bodian cult manages to reinstate a 17th-century law against witchcraft.

The dramatic conclusion to James Follett's trilogy, following Temple of the Winds and Wicca It is over six months since the West Sussex community of Pentworth became isolated from the rest of the world by a mysterious force wall. Beyond the strange, dome-like barrier lies the unreachable world of the bleak steppes of Europe of 40,000 years ago. Equally unreachable are the visitors responsible for the creation of the force wall, sheltering in their UFO in a deep swamp... moreThe dramatic conclusion to James Follett's trilogy, following Temple of the Winds and Wicca It is over six months since the West Sussex community of Pentworth became isolated from the rest of the world by a mysterious force wall. Beyond the strange, dome-like barrier lies the unreachable world of the bleak steppes of Europe of 40,000 years ago. Equally unreachable are the visitors responsible for the creation of the force wall, sheltering in their UFO in a deep swamp. The visitors have largely ignored the imprisoned inhabitants with the exception of sixteen-year-old Vikki Taylor. She alone holds the key as to why the visitors have come. But the revival of ancient superstitions in Pentworth have made Vikki and her friends fugitives, accused of witchcraft. The Silent Vulcan opens with Pentworth on the brink of a bloody civil war between town and country and concludes with the visitors finally showing their hand and revealing the extraordinary reason for their arrival in their "Silent Vulcan." less