1777: In the throes of the Revolutionary War, Landon Mansion is commandeered by British Lord “Butcher” Bedford. He stabs Lucy Tarleton — who spurned his king and his love — leaving her to die in her father’s arms. Now: After the day’s final tour, docent Allison Leigh makes her rounds while locking up…and finds a colleague slumped over Bedford’s desk, impaled on his own replica bayonet. Resident ghosts may be the stock-in-trade of stately Philadelphia homes, but Allison — a noted historian — is indignant at the prospect of “ghost hunters” investigating this apparent murder. Agent Tyler Montague knows his hauntings and his history. But while Allison is skeptical of the newcomer, a second mysterious murder occurs.