The police apprehend a gang of opium smugglers on the banks of the Thames, but as he stands at the water's edge, Inspector John Marlott makes a shocking discovery. The body of a dead child is washed up on the shore, but further examination of the cor... (more)pse reveals a grotesque state of mutilation. Home Secretary Sir Robert Peel orders Marlott to lead the investigation, while details of the investigation must remain confidential.