Watchmen is a groundbreaking graphic novel written by Alan Moore and illustrated by Dave Gibbons. Set in an alternate version of the United States during the Cold War era, it presents a world where superheroes exist and have influenced historical events. The story follows a group of retired superheroes who investigate the murder of one of their own, leading them to uncover a complex conspiracy that threatens the world. Watchmen is known for its deep exploration of moral ambiguity, complex characters, and intricate storytelling, making it a must-read for fans of alternate history and graphic novels.