Résumé : Robert Langdon, an eminent specialist of symbology of Harvard, is immediately convened to the Louvre. We discovered a message coded on the corpse of the chief conservative(curator), found murdered in the middle of the Big gallery. To examine the series of pictograms, he(it) is supported by Sophie Neveu, brilliant one member cryptographist of the police. Much to their surprise, the first indications lead(drive) them to the work of Léonard de Vinci