A hundred years later, recovering from her own great loss, mythologist Jac L'Etoile is invited to Jersey to uncover a secret about the island's mysterious Celtic roots. She's greeted by Neolithic monuments, medieval castles, and hidden caves. But the man who has invited her there, a troubled soul named Theo Gaspard, hopes she'll help him discover something quite different...something that will threaten their sanity and put their very lives at stake.