Good Omens, written by Terry Pratchett and Neil Gaiman, is a comedic fantasy novel that tells the story of an angel and a demon who team up to prevent the apocalypse. As the forces of Heaven and Hell prepare for the final battle, Aziraphale and Crowley must navigate the complexities of human nature and their own unlikely friendship. With its clever humor and imaginative storytelling, Good Omens is a witty and entertaining exploration of morality, free will, and the power of friendship.