The macabre murder of a prominent nobleman throws an already unsettled London into chaos in this electrifying new historical mystery by the USA Today bestselling author of What Cannot Be Said.

August 1816. England is in the grip of what will become known as the Year Without a Summer. Facing the twin crises of a harvest-destroying volcanic winter and the economic disruption caused by the end of the Napoleonic Wars, the British monarchy finds itself haunted by the looming threat of bloody riots not seen since the earliest days of the French Revolution. Amidst the turmoil, a dead man is found hanging upside down by one leg in an abandoned chapel, his hands tied behind his back. The pose eerily echoes the image depicted on a tarot card known as Le Pendu, the Hanged Man. The victim—Lord Preston Farnsworth, the younger brother of one of the Regent’s boon companions—was a passionate crusader against what he called the forces of darkness, namely criminality, immorality, and sloth. His brutal murder shocks the Palace and panics the already troubled populace.

Sebastian St. Cyr, Viscount Devlin, learns of the murder from a ragged orphan who leads him to the corpse and then disappears. At first, everyone in the dead man’s orbit paints Lord Preston as a selfless saint. But Sebastian quickly realizes that the man had accumulated more than his fair share of enemies, including Major Hugh Chandler, a close friend of Sebastian’s who once saved his life. Sebastian also discovers that the pious Lord Preston may have been much more dangerous than those he sought to redeem.

As dark clouds press down on the city and the rains fall unceasingly, two more victims are found, one strangled and one shot, with ominous tarot cards placed on their bodies. The killer is sending a gruesome message and Sebastian is running out of time to decipher it before more lives are lost and a fraught post-war London explodes.

Published
April 15, 2025
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Sebastian St. Cyr Mysteries

The series

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Step into the shadowy world of Regency England, where intrigue and danger lurk behind every gilded door and beneath the polished surfaces of high society. The Sebastian St. Cyr Mysteries invites readers into the life of a brooding nobleman-turned-sleuth whose investigations reveal not just the criminal underworld of London but the hidden, often tragic stories of its people.

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Sebastian St. Cyr, the Earl of Hendon, is no ordinary detective. Haunted by his own dark past and the complexities of his own lineage, he becomes an unlikely investigator, driven by both personal demons and an unyielding desire for justice. Each case he tackles forces him to confront not only the brutal realities of Regency society but also the ghosts of his own history. His investigations span everything from high-profile murders to the quiet, forgotten crimes of the poor, unveiling the contradictions of an age marked by both grandeur and decay.

What sets this series apart is its richly woven atmosphere—Harris doesn’t just craft mysteries; she brings an entire world to life. Regency London pulses with authenticity, from the narrow, fog-filled streets to the grand, candlelit ballrooms. The tension between public respectability and private vice runs throughout, as St. Cyr navigates not only dangerous criminals but the webs of secrets that tie the social elite together. It’s a world where the boundaries between right and wrong blur, and the most intriguing mysteries lie in the human hearts beneath the masks.

With each book, the stakes grow higher, the characters more complex, and the web of intrigue more tightly spun. The Sebastian St. Cyr Mysteries is more than a series of compelling whodunnits—it’s a study in character, morality, and the unspoken truths that shape the past. A series where the past and present collide, each novel offers a captivating journey into a world where every mystery is more than it seems.

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