Fans of Sebastian St. Cyr, Viscount Devlin, know that the individual tales that form his saga combine complex, fast-paced, often political mysteries with a series of revelations about his family’s history that it would be churlish to reveal. All this takes place against the background of the Napoleonic Wars, mostly in Regency-era London with its vast social gap between the aristocratic rich and the starving, crime-ridden poor.

The eighteenth of Sebastian’s adventures, Who Cries for the Lost (Berkley Books, 2023) begins a few days before the Battle of Waterloo, a cataclysmic event—unknown to the characters, obviously—that will end Napoleon’s military ambitions once and for all. A mutilated body is fished out of the Thames River and taken to Paul Gibson—a friend of Sebastian’s who served as a surgeon during the Peninsular War—for an autopsy. When Paul’s lover identifies the victim as her former husband and an aristocrat, the creaky wheels of the London policing system grind into gear. The Thames River Police may provide as much hope for justice as the costermongers and wherry boatmen of the city deserve, but a nobleman falls under the jurisdiction of Bow Street.

As the number of corpses rises and pressure from the Prince Regent in Carlton House intensifies, Sebastian must race to solve a series of baffling, seemingly disconnected murders before the outcry demanding a solution leads to the arrest and execution of his friends. Meanwhile, the country anxiously awaits reports from the Duke of Wellington’s army on the Continent, further stoking the tension, even as Sebastian confronts the reality of his nation’s past misdeeds during the war and wonders whether those atrocities explain the crimes being committed in the present.

Candice Proctor, aka C.S. Harris and C.S. Graham, is the USA Today bestselling, award-winning author of more than two dozen novels, including the Sebastian St. Cyr Regency mystery series written under the name C.S. Harris, the C.S. Graham thriller series co-written with Steven Harris, and seven historical romances. She is also the author of a nonfiction historical study of women in the French Revolution.

C. P. Lesley is the author of two historical fiction series set during the childhood of Ivan the Terrible and three other novels. Her latest book, Song of the Storyteller, appeared in January 2023.