In 1855, Britain and France are fighting to keep the Russians from snatching the Crimean Peninsula from the Ottoman Empire, and Florence Nightingale has made it her mission to improve the wretched conditions in the British military hospitals in Turkey. When young women start turning up dead, their mouths sewn shut with embroidered fabric roses, Inspector Charles Field is sent from England to find the killer among the doctors, military men, journalists and others swarming Turkey’s famous Barrack Hospital. When the prime suspect takes his own life, the case is closed. Or is it? Twelve years later, women again start turning up dead, their mouths covered by that telltale embroidered rose. Did Field suspect the wrong man before, or is he dealing with a deviant copycat?

London, June 1860: When an assassination attempt is made on Queen Victoria, and a petty thief is gruesomely murdered moments later, Chief Detective Inspector Charles Field quickly surmises that the crimes are connected. Was Victoria really the assassin’s target? Or were both crimes part of an even more sinister plot? Field’s investigation soon exposes a shocking conspiracy: the publication of Charles Darwin’s controversial ON THE ORIGIN OF SPECIES has set off a string of terrible crimes. As the investigation takes Field from the dangerous alleyways of London to the hallowed halls of Oxford, the list of possible conspirators grows, and the body count escalates. And as he edges closer to the dastardly madman called the Chorister, he uncovers dark secrets that were meant to remain forever hidden.