A riveting true story of murder and detection in 15th-century Paris, by one of the most brilliant medievalists of his generation. On a chilly November night in 1407, Louis of Orleans was murdered by a band of masked men. The crime stunned and paralyzed France since Louis had often ruled in place of his brother King Charles, who had gone mad. As panic seized Paris, an investigation began. In charge was the Provost of Paris, Guillaume...