From the creator of Foyle’s War, a marvelous Sherlock Holmes novel, in the style of Conan Doyle. Horowitz has all the elements you’d expect in a classic Holmes and has absolutely nailed the style. There’s a clever plot that weaves together two mysteries, memorable characters, and puzzles. What surprised me was that my favorite parts were where Horowitz carefully colored outside the lines in the narration—reflecting on the humanitarian problem of childhood poverty in London in 1890, which the Baker Street Irregulars brings up, but Conan Doyle never “saw” because it was simply part of the backdrop of his life. Horowitz also spares quick, more compassionate asides for characters like Lestrade and Mrs. Hudson, remarking that while she appears in his narratives, he regrets never taking the time to know her. I thought these “blind spots” Horowitz has the sensitivity to see were quite touching and made the novel something better than just another mystery.