Inspector Charles Field is hunting a ruthless serial killer who is terrorizing Florence Nightingale and her nurses in Crimea in 1855. But when the main suspect turns up dead, Field determines the case is closed. Or is it? Twelve years later in London, amidst the turmoil surrounding the expansion of voting rights, Field discovers a woman's body, mouth covered by the killer's signature embroidered rose. Did Field suspect the wrong man before, or is he dealing with a copycat? Either way, with his own family now at risk, he must race against time to stop the killer before more bodies turn up.