The first death looked like a suicide. But someone had tucked a picture of an angel and a handful of white feathers into the banker's pocket before pushing him in front of a train. A killer is stalking The Square Mile--the financial district in London--an avenging angel intent on punishment. But why these victims? What were their sins? Psychologist Alice Quentin swore she'd never get involved with police work again. Her duty is to the living, not...