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  • Published: 12 May 2026
  • ISBN: 9780593953891
  • Imprint: Berkley
  • Format: Hardback
  • Pages: 400
  • RRP: $70.00

When the Wolves Are Silent




A string of shocking ritual killings have London's ruling elite panicked in the latest Sebastian St. Cyr mystery by C.S. Harris, the USA Today bestselling author of Who Will Remember.

A brutal string of ritualistic killings terrorizes a city already shaken by economic and political turmoil in this chilling new historical mystery from C. S. Harris, USA Today bestselling author of Who Will Remember.

London, 1816: When a notorious young aristocrat is burned alive on a windswept hill popular with neo-Druids, former cavalry officer Sebastian St. Cyr, Viscount Devlin, finds himself plunged into a murder investigation shadowed by tales of ancient human sacrifices and long-buried secrets. 

The victim, Marcus Toole, was the only son and heir of a prominent nobleman. His closest friend—Sebastian’s own nephew, Bayard—claims to have passed out drunk before the attack and remembers nothing. But when Sebastian and his brilliant wife, Hero, delve deeper into the sordid activities of Bayard and his friends, they come to realize that Bayard may not be as innocent as he pretends. Following a tangled trail that leads from a disaffected former soldier-turned-highwayman to a beautiful, courageous journalist and a Jamaican-born fencing master with ties to a radical political movement, Sebastian begins to suspect that Bayard and his friends are being targeted in revenge, by victims who believe they have no other recourse.

Then two more of Bayard’s friends are killed, their murders staged to echo the ritual sacrifices of the ancient Celts. With the palace shaken by the fear of riots and one horrifying death following another, Sebastian must race to stop a ruthless plot that threatens the lives of innocents and could rip his troubled nation apart.

  • Published: 12 May 2026
  • ISBN: 9780593953891
  • Imprint: Berkley
  • Format: Hardback
  • Pages: 400
  • RRP: $70.00

About the author

C. S. Harris

C. S. Harris is the USA Today bestselling author of more than thirty novels, including the Sebastian St. Cyr Mysteries; as C. S. Graham, a thriller series coauthored with former intelligence officer Steven Harris; and seven award-winning historical romances written under the name Candice Proctor. A respected scholar with a PhD in nineteenth-century Europe, she is also the author of a nonfiction historical study of the French Revolution. She lives with her husband in New Orleans and has two grown daughters.

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Praise for When the Wolves Are Silent

Praise for the Sebastian St. Cyr Mysteries

“Harris does her usual superior job of combining a page-turning fair-play plot with plausible period detail. Both series fans and newcomers will be captivated.”—Publishers Weekly (starred review)

“St. Cyr is a brawler and his tough sleuthing is admirable. . . . This series is a favorite.”—The New York Times Book Review

“Sebastian St. Cyr is everything you could want in a Regency-era nobleman-turned–death investigator: uncannily clever, unwaveringly reserved, and irresistibly sexy. The entire series is simply elegant.”—#1 New York Times bestselling author Lisa Gardner