Watchmen is a groundbreaking alternate history graphic novel written by Alan Moore and illustrated by Dave Gibbons. Set in a world where superheroes exist and have influenced major historical events, the story follows a group of retired vigilantes investigating the murder of one of their own. Watchmen explores complex themes of power, morality, and the nature of heroism, while also providing a gripping mystery and intricate character development. With its intricate storytelling and thought-provoking narrative, Watchmen has become a classic in the genre of alternate history graphic novels.