Lyra and Will find themselves in a strange new place. The Magisterium take action as Mrs Coulter interrogates a suspected heretic witch, and Lee Scoresby embarks on a mission.

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 goes against her better instinct and decides to ignore the alethiometer's advice, leading to dangerous consequences.

Will and Lyra team up and concoct a devious plan, as they remain unaware of the dangers or the cost involved.

Will and Lyra set out to retrieve what's been lost. Mary takes a leap of faith.

Lyra and Will find allies who can help them in their search for Will's father. The Magisterium learn something shocking, and Mrs Coulter meets a formidable foe.

As all paths converge on Cittàgazze, the mission to find Will's father becomes more pressing. Having survived the balloon crash, Jopari and Lee try to locate the knife bearer, but the Magisterium are in close pursuit. Ruta updates Serafina on Asriel's plans, but Serafina insists her duty is to Lyra. Mary consults the I Ching on her task after bidding goodbye to Angelica and Paola.