Sarah Brandt is shattered when she learns that a woman has inquired for Catherine, the abandoned child she has taken as her daughter. Sarah asks Malloy to investigate. But when he goes to interview the woman at her tenement, he finds she has been murdered.

Sarah Brandt is shattered when she learns that a woman has inquired at the Daughters of Hope Mission for Catherine, the abandoned child she has taken as her daughter. The woman claims she was Catherine’s nursemaid, and is now acting on behalf of the girl’s mother to reunite them. Unwilling to simply hand Catherine over to a complete stranger, Sarah asks Detective Sergeant Frank Malloy to investigate. But when he goes to interview the woman at her tenement in Chelsea, he finds she has been murdered. Though her death leaves Sarah’s claim to Catherine unchallenged, her sense of justice compels her to work with Malloy to find the killer. Their search takes them from the marble mansions of the Upper West Side to the dilapidated dwellings of lower Manhattan and into the deepest and darkest secrets of Catherine’s past. And while Malloy helps Sarah determine the fate of the child she loves, he faces a challenge of his own—and his decision could change both their lives forever…

In the dark days of World War I, an aristocrat’s suspicious suicide propels the female detectives of Mayfair 100 into a sordid world of blackmail, betrayal, and tragic secrets When the phone rings at the Mayfair 100 exchange, the news is rarely good, and this time is no exception. The Duchess of Penhere’s daughter, notorious society gossip queen Lady Adeline Treborne, has been found dead in her room in what appears to be a suicide—but her family suspects foul play. The secret Mayfair team of amateur female detectives has been restlessly awaiting their next case, and this will prove one of their thorniest. When Dr. Caroline Allardyce performs an autopsy, she is able to conclusively prove that the woman was murdered. Lady Treborne had made many enemies through her vicious gossip column, so there's no shortage of suspects. Supported by a cadre of professional police officers, the Mayfair women launch their investigation, but there’s much more to this case than meets the eye. As they venture into a world that lays bare London high life at its lowest, the team soon begins to comprehend the danger at hand—and how this tangled web of treachery could ensnare anyone who gets too close.

A terrifying, grotesque figure bursts into a young art student's room. Head covered with a clown's wig, face concealed by a smiling mask, it wears the rubber gloves of a surgeon. The girl is seized, chloroformed, suffocated and - horrifyingly - beheaded. This is only the beginning of a series of murders terrorising London's fashionable bohemia.