In the sweltering New York City summer of 1841, Mary Rogers, a popular counter girl at a tobacco shop in Manhattan, is found brutally ravaged in the shallows of the Hudson River. John Colt, scion of the firearm fortune, beats his publisher to death with a hatchet. And young Irish gang leader Tommy Coleman is accused of killing his daughter, his wife, and his wife’s former lover. Charged with solving it all is High Constable Jacob Hays, the city’s first detective. At the end of a long and distinguished career, Hays’s investigation will ultimately span a decade, involving gang wars, grave robbers, and clues hidden in poems by the hopeless romantic and minstrel of the night: Edgar Allan Poe.