London, April 1891. When the severed torso of a woman washes up on the bank of the river Thames, London believes a serial killer from the past has struck again. Crime photographer and investigator Sarah Bain Barrett is on the scene with her friends Mick O'Reilly and Lord Hugh Staunton. This is their chance to solve a grisly cold case and deliver a monster to belated justice, with help from Sarah's husband Detective Sergeant Thomas Barrett; her sister...