The Vicomte de Bragelonne

Set ten years after the previous adventures, d'Artagnan resigns from the Musketeers, viewing King Louis XIV as weak. He seeks to aid Charles II in reclaiming the English throne, unaware that Athos shares this goal. As Louis assumes power after Cardinal Mazarin's death, he faces intrigue from his finance minister, Colbert, who aims to undermine Nicolas Fouquet. D'Artagnan is called back to investigate Fouquet's fortifications, leading to a web of deception involving Porthos and Aramis, now a bishop. The story intertwines loyalty, ambition, and royal politics.