The Silent Vulcan

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. 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.""