The Serpent Under: Treachery, Twists and Terror in Baker Street (A Sherlock Holmes Adventure, Book 6)

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Holmes and Watson face treachery and danger in the latest full-length thriller by Bonnie MacBird, author of the bestselling Sherlock Holmes novel Art in the Blood. Murder, jealousy , and deceit underscore three interlocking mysteries as Holmes and Watson take on a high profile case at Windsor Castle, a boy drowned in the Serpentine, and a crusading women’s rights activist who suspects a traitor in her organisation. The cases send them into danger into locales as varied as the palace itself, a dockland cannery, an arts and crafts atelier, and a gypsy encampment. But is there peril underfoot as well – right at 221B Baker Street?The twisting, breathlessly plotted conjoined mysteries that Bonnie MacBird is known for provide a thrill ride that will delight Sherlockians worldwide.The Serpent Under, a best-selling work of fiction by Bonnie MacBird, is a captivating blend of suspense, mystery, and historical elements. This detective procedural takes readers on a thrilling journey through a world of crime, deceit, and danger, solidifying its place among the top traditional thrillers.For fans of Anthony Horowitz (Marble Hall Murders), James Lovegrove (Sherlock Holmes and the Christmas Demon), M. K. Wiseman (Sherlock Holmes & the Ripper of Whitechapel), Christian Klaver (The Classified Dossier), and Charles Veley (The Last Moriarty).HarperCollins 2025 Show more