When Sybil Delafield's coach to Croft Towers was robbed by highwaymen, she should have realized that her new position as companion to old Mrs. Chaleroft would be no ordinary job. Upon Sybil's arrival, Mrs. Chaleroft sneaks into her room in the dark of night, imploring her relay messages to town that are to stay hidden from the rest of the family. Who exactly is Sybil working for and what do the messages contain? When fellow passengers of the robbed coach are later murdered, Sybil's hunt for the truth takes on a new urgency. The only person she can rely on is Mr. Sinclair, Mrs. Chaleroft's godaon, but under all his charms he, too, leads a double life. Sybil must decide if he is the one honest voice she can trust, or if he is simply using her for his own advances. With murderers, smugglers, and spies on the loose, nothing-and no one- in Regnecy England is what they claim. Can Sybil even trust what she knows about herself?