What a great mystery! Starting with a submerged body bobbing to the surface after a torpedo demonstration it winds its way through 1890s Leeds, with two dead men, rival gangs, and bent coppers, all leading up to a surprising and exciting ending. A taut and well-crafted plot handily kept the tension and suspense going through the whole story and I read most of it in one evening, I just couldn't put it down! The colorful and descriptive Victorian world created by the author drew me in easily, and the wonderful characters, from the gangsters to the dedicated coppers to Harper's Suffragette wife, Annabelle, they really brought the book to life. And the ending! Whooo, never saw that coming! An excellent historical mystery from start to finish.