After the shocking murder of his father, Patrick Moses is forced back into duty in the crime-plagued Levee District. The mysterious, blonde-haired mute, a man Moses believes to be responsible for four murders, continues to elude the police. Tracking him is an endless task, but Moses and his new partner, Sam Walker, are asked to step up their investigation of the "Prostitute Murders" after the head of a courtesan is found impaled on the tip of a sword in front of the precinct building. When the twin daughters of a successful elevator manufacturer are kidnapped, Moses and Walker are asked to prioritize this new case. As the pressure mounts and the cases get darker, Moses begins to unravel. The trips to the opium den and his drinking take over. Moses knows he is slowly becoming one of the Levee District animals he usually tracks.