"Twenty Years Later" is a historical novel by Alexandre Dumas, part of the d'Artagnan Romances series. It follows the adventures of the original characters from "The Three Musketeers," set two decades after the events of the first book. The story explores themes of friendship, loyalty, and the passage of time as the characters navigate political intrigue and personal challenges. In this sequel, d'Artagnan reunites with his old friends, Athos, Porthos, and Aramis, as they confront new enemies and old rivalries. The narrative delves into their evolving relationships and the impact of their past actions, highlighting the enduring bonds of camaraderie amidst changing circumstances.