WHEN THE WOLVES ARE SILENT (Sebastian St. Cyr Mystery) by C.S. Harris
This review was published in the May 2026 issue of Historical Novels Review.
Post-war London’s social unrest in 1816 is the setting for this historical thriller, the 21st in the author’s Sebastian St. Cyr Mystery series. Military veteran Sebastian, Viscount Devlin’s investigatory skills are called into action when his nephew discovers an elite yet ne’er-do-well chum murdered. Another died the week before, calling into question whether the deaths are a squabble among them, retribution for dirty deeds, or perhaps the start of a societal revolution against the ruling class.
Period detail immerses the reader in Regency London, from fashionable homes in Mayfair and Grosvenor Square to the stench of stables and storehouses north of Charing Cross, and crowded lanes of grimy coffeehouses and pubs. Motivations of a disparate and vast group of characters are explored with depth, painting a bleak period when the privileged and titled go to any lengths to hide their secrets and preserve wealth and positions, even if it requires the hanging of innocent commoners. Clues come fast and furious to Sebastian, who, along with his wife Hero, high-born but with working-class sensibilities, is drawn with an admirable equanimity despite being part of the London elite. Threads connect rather than become convoluted, giving the story rhythm, urgency, and plot twists, and a satisfying conclusion.
The book can be read as a standalone, though character appearances sometimes come with backstory from earlier in the series that slows pacing, but not overly so. Prose is sprinkled with period-specific slang, bringing alive John Bull and the jarveys, ostlers, dowagers, footpads and rum characters of the day. As in previous novels, author Harris weaves in supporting roles for actual historical figures like German scientist Friedrich Accum and infamous American War soldier Tarleton. A fast-paced, page-turning and period perfect thriller, perfect for fans of England’s Regency era.