A high-profile murder propels a unique crime-fighting team into the dark environs of London's underworld--and on a terrifying quest to track a ruthless killer London, 1915. As World War I engulfs Europe, a special task force is formed in the affluent Mayfair district to tackle the city's thorniest crimes against women. When the bobbies and Scotland Yard come up short, there's only one telephone number to dial: Mayfair 100. An...