The Wrath of Gaia

In The Gatekeeper and the Guardian, Jack was shipwrecked, and washed ashore, half dead, on an uncharted South Pacific island in August 2010. There he discovered an impossibly advanced science, operated by a stone-age culture, one that had lost the use of fire and the wheel. The first person he met was Jien Noi, (Jinnie), the Empress Elect of the matriarchal, homo erectus colony. She also held the position of Gatekeeper, which was a rare combination.
His best friend to be, was introduced next...