The alethiometer sends Lyra and Iorek on a new path, leading to a shocking but vital clue in her search to find her friend Roger and the other missing children.

Lyra discovers the horrific truth behind the Gobbler’s activities in the North. She must use all her wits to help free those around her and avoid suffering a terrible fate.

Separated from her friends, Lyra must use all of her methods of deception to thwart a formidable foe. Meanwhile, Mrs Coulter plots her next move.

Lyra crosses into Will's world, and they set off to find answers about Dust. Will is shocked to discover he has grandparents, but quickly realises he can’t trust them.

Lyra ignores the alethiometer, with dangerous consequences for her and Will. Lee Scoresby’s search for Grumman brings an unlikely ally, and the witches seek answers.

Lyra and Will reunite with Mary and hear a story that changes everything. Now they must decide what they are willing to sacrifice if they are to save the worlds.