Miraculously revived on a rooftop in Marseilles ten years after an apparently fatal shipwreck, Inspector Juve and his faithful friend, the journalist Jerome Fandor, renew their never-ending pursuit of the Lord of Terror. Sensing a plot behind mysterious events surrounding a diplomat entrusted with a fortune in diamonds, Juve and Fandor set out again to unmask the criminal mastermind in this, the first Fantomas novel written by Marcel Allain alone, after a decade-long hiatus following the death of series coauthor Pierre Souvestre.