A notable early use of the modern concept of evil twins in film is 1939's "The Man in the Iron Mask". This adaptation of a part of the novel "The Vicomte de Bragelonne" by Alexandre Dumas made a key change to the source material by suggesting that the plot's central twins were in fact opposites of each other. Louis XIV is portrayed as the evil twin of Philippe, a boy raised by d'Artagnan and The Three Musketeers. The movie contains many of the common tropes of the evil twin plot, such as the fact that Phillippe is unaware of his twin's existence, differences in upbringing being important to the twins' adult temperaments, facial hair as a way for the audience to distinguish between the twins, one twin impersonating the other, and the eventual triumph of the good twin.