A classic historical adventure novel by Alexandre Dumas and the final installment of the D'Artagnan Romances. Set in 17th-century France, the story follows the aging Musketeers—Athos, Porthos, Aramis, and D'Artagnan—as they become involved in a daring plot surrounding a mysterious prisoner forced to wear an iron mask. Filled with political intrigue, loyalty, betrayal, friendship, and adventure, the novel is one of Dumas's most famous works.