The legend of the Nel Tower is one of the most terrible mysteries of French history. They say that during the reign of the son of the Iron King Philip IV, near the walls of the tower, Parisians caught not only fish in the Seine... The famous French writer Michel Zevaco (1860–1918), whose novels are known in Russia thanks to films with the participation of Jean Marais and other wonderful actors, gives his version of the dramatic events that took place at the beginning of the 14th century at the Capetian court, the longest dynasty of French kings. The novel “Secrets of the Nel Tower” is published in Russian for the first time.