Watchmen is a groundbreaking graphic novel written by Alan Moore and illustrated by Dave Gibbons. Set in an alternate version of the United States where superheroes exist, the story explores themes of power, morality, and the nature of heroism. Watchmen is widely regarded as one of the greatest comic books of all time, known for its intricate plot, complex characters, and thought-provoking themes. It has had a significant impact on the comic book industry and remains a must-read for any fan of the medium.