In this fifth book of the "Intrigues" series, Adrien Goetz and his marvelous recurring heroine Penelope, a curator who now works in the Louvre's Egyptian department overlooking the jewel collection, draw us into an intrigue that will reveal the best kept secret in History. What secret ties the Bonapartes to the Bourbons, the key to which is said to be found in the land of the Pharaohs? An investigation through the mysteries of history!