His Dark Materials: The Amber Spyglass (Book 3)

The concluding volume of Philip Pullman's epic trilogy, The Amber Spyglass brings the parallel worlds of Lyra Belacqua and Will Parry to a head. As the war between the Authority and the rebels intensifies, the two children must navigate a landscape of profound danger and moral ambiguity. Their quest leads them to the edge of existence, where the fate of the universe hinges on a choice that defies conventional notions of good and evil.

Description adapted from Open Library ↗.