While researching her next book, historian and author Hayley Hunter rents a lighthouse in Southeastern North Carolina. The modern lighthouse and vacation home replaced an original wooden structure that only functioned during the Revolutionary War. The old lighthouse may be long gone, but the lightkeeper's ghost remains. Hayley becomes increasingly obsessed with finding out why the spirit of Jonathan Corbyn lingers between realms. Her search will take her into a world of spies, double agents, and espionage at the dawn of American democracy.