A young girl—a mudlark—is found dead on the muddy bank of the Thames in her best dress, a crystal perfume bottle clutched in her lifeless hand . . .Fearing foul play, widow Amelia Greystone sends for Scotland Yard Inspector Henry Field—the man still haunted by his failure to solve her husband's murder. Though the trust between them is fragile, Amelia believes Henry is the only one capable of delivering justice.

Scotland Yard Inspector Henry Field has few clues to follow but is determined to prove his quick rise through the ranks of the Metropolitan Police wasn't simply because of his last name. Yet when the ravenkeeper's daughter is found, the case becomes even more complicated. Discovering the frightened, disheveled girl on her doorstep is a shocking start to widow Amelia Greystone's day. So is the inspector assigned to the case—the same one who has yet to solve her husband's murder.

Leonora Spencer has an acquaintance with death. Sixteen years ago, only she survived the brutal murder of her family. Now, as an assistant in her uncle's London morgue, she uses her photographic memory to catalogue details for his coroner reports. She also isn't opposed to helping him during postmortems if his skilled hands begin to shake. After a thief breaks into the morgue and steals a locket from a young woman's corpse, Leo is determined to understand why, even if it means going against Detective Inspector Jasper Reid's express orders to keep her nose out of it.

November 1866: The grisly murder site in London's East End is thronged with onlookers. None of them expect the calmly efficient young woman among them to be a medical doctor, arrived to examine the corpse. Inspector Richard Tennant, overseeing the investigation, at first makes no effort to disguise his skepticism. But Dr. Julia Lewis is accustomed to such condescension . . .

A murdered opera singer. A duke drenched in her blood. For Bow Street Officer Hugh Marsden, the brutal killing is a straightforward case. Ever since his exile from polite society, the chance to arrest a high and mighty peer of the realm has never presented itself. Hugh won't snub the opportunity now. But Audrey Sinclair, the Duchess of Fournier, is certain her husband is wrongly accused, and she's determined to prove it to the arrogant Bow Street officer, even if she must employ her most peculiar ability—or perhaps curse—to guide her investigation. After all, a duchess can do as she pleases.