When a trip to the post office brings a letter addressed to her old detective agency asking her to locate a missing Irish serving maid, Molly Murphy --- now Molly Sullivan --- figures it couldn’t hurt to at least ask around. On the same day, Molly learns that five babies have been kidnapped in the past month. What she uncovers will lead her on a terrifying journey through all levels of society, putting her life --- and that of her baby --- in danger.
Molly Murphy, now Molly Sullivan, and her husband have been invited to spend their honeymoon on the Newport, RI, estate of Alderman Brian Hanna in the spring of 1904, but Molly doesn’t entirely trust the offer. Hanna---an ambitious man---has his eye on a senate seat and intentions of taking Tammany Hall to get it, and when when Hanna is found dead at the base of the cliffs that overlook the Atlantic, Molly’s suspicions are quickly justified.
Lady Georgiana Rannoch has once again been called into service by Her Majesty the Queen. This time she's sent to Nice on a secret assignment that's nothing to sneeze at --- recover the Queen's stolen snuff box.