His Dark Materials is a trilogy of fantasy novels by Philip Pullman. The first book, Northern Lights (published as The Golden Compass in North America), was released in 1995. The second book, The Subtle Knife, followed in 1997, and the third book, The Amber Spyglass, was published in 2000. The trilogy is set in a multiverse and follows the coming-of-age of two children, Lyra Belacqua and Will Parry, as they navigate parallel worlds and grapple with questions of morality, consciousness, and the nature of existence. His Dark Materials was adapted into a series on HBO from 2019 to 2022.