This well imagined, carefully detailed, and cleverly plotted debut is set in 1811 London. Regency London knows Constance Tyrone as the conspicuously celibate founder of the St. Catherine Society, dedicated to helping poor women. One rainy November evening a carriage mows down Constance outside her office in St. Catherine's Church. Curiously, while her corpse's one foot is bare, the other is shod in a clean satin slipper though the road where she died...