December, 1904. Jemima Pitt, now twenty-two, agrees to act as a "suitable companion" to her friend Delphinia, who is traveling to New York to be married to Brent Albright, toast of New York high society. Jemima is excited about the prospect of a Christmas adventure in a strange big city, but little does she expect to be enlisted on a top secret mission by Brent's brother Harley, to track down Delphinia's estranged mother. After some detective work and a little luck, they manage to locate her lodgings -- but to their horror, they find Maria dead. Truly her parents' daughter, Jemima is determined to unmask the killer, and enlists the aid of handsome young police officer Patrick Flannery to do it. And along the way she comes to learn an important lesson about staying true to oneself, no matter the cost.