The Man in the Iron Mask, the final installment of Alexandre Dumas' d'Artagnan Romances, unveils a dark secret at the heart of the French monarchy: King Louis XIV has a twin brother, Philippe, imprisoned for years behind an iron mask to conceal his existence. The cunning Aramis devises a daring plot to swap the brothers and install Philippe on the throne. When the conspiracy collapses, the musketeers face tragic consequences—Porthos falls heroically, Athos dies of heartbreak, and d'Artagnan remains torn between loyalty to the crown and his cherished friendships, as Philippe is condemned to lifelong isolation.
