The Man in the Iron Mask is the final episode in the cycle of novels featuring Dumas celebrated four some of D Artagnan. It is the darkest tale of the Musketeers trilogy. The concluding installment of Alexandre Dumas's celebrated cycle of the Three Musketeers, D'Artagnan remains in the service of the corrupt King Louis XIV after Athos, Porthos, and Aramis have retired. While it has been more than twenty years since their great deeds were performed, the four appear to be just as strong and brave as then. Unbeknownst to D'Artagnan, Aramis and Porthos are plotting against the inept and corrupt king of France, which involves a mysterious prisoner in an iron mask. The fortunes of all are drawn into the dangerous plot surrounding this mysterious prisoner.