Newly orphaned Peggy Grahame is caught off-guard when she first arrives at her family's ancestral estate. Her eccentric uncle Enos drives away her only new acquaintance, Pat, a handsome British scholar, then leaves Peggy to fend for herself. But she is not alone. The house is full of mysteries and ghosts. Soon Peggy becomes involved with the spirits of her own Colonial ancestors and witnesses the unfolding of a centuries-old romance against a backdrop of spies and intrigue and of battles plotted and foiled.