The novel by the famous French writer Alexandre Dumas “The Two Dianas” contains all the components that can attract the reader’s attention to it. There are sinister secrets and an innocent heroine - a victim of insidious intrigues, there is a duet of villains - Diane de Poitiers and Constable Montmorency, and finally, there is the noble Duke of Guise. And the colorfully recreated historical background against which the novel takes place adds new facets to its merits.