world. Lyra's alethiometer is stolen by Lord Boreal alias Sir Charles Latrom, an ally of Mrs Coulter who has found a way to Will's Oxford and established a home there. Will becomes the bearer of the Subtle Knife, a tool forged three hundred years before by Cittàgazze's scientists from the same alloy used to make the guillotine in Bolvangar. One edge of the knife can divide subatomic particles and form subtle divisions in space, creating portals between worlds; the other edge easily cuts through any form of matter. Using the knife's portal-creating powers, Will and Lyra are able to retrieve her alethiometer from Latrom's mansion in Will's world. Meanwhile, in Lyra's world, Lee Scoresby seeks out the Arctic explorer Stanislaus Grumman, who years before entered Lyra's world through a portal in Alaska. Scoresby finds him living as a shaman under the name Jopari and he turns out to be Will's father, John Parry. Parry insists on being taken through the opening into the Cittàgazze world in Scoresby's balloon, since he has foreseen that he should meet the wielder of the Subtle Knife there. In that world, Scoresby dies defending Parry from the forces of the Church, while Parry succeeds in reuniting with his son moments before being murdered by Juta Kamainen, a witch whose love John had once rejected. After his father's death, Will discovers that Lyra has been kidnapped by Mrs Coulter, and he is approached by two angels requesting his aid. The Amber Spyglass At the beginning of The Amber Spyglass, Lyra has been kidnapped by her mother, Mrs Coulter, an agent of the Magisterium who has learned of the prophecy identifying Lyra as the next Eve. A pair of angels, Balthamos and Baruch, tell Will that he must travel with them to give the Subtle Knife to Lyra's father, Lord Asriel, as a weapon against The Authority. Will ignores the angels; with the help of a local girl named Ama, the Bear King Iorek Byrnison, and Lord Asriel's Gallivespian spies, the Chevalier Tialys and the Lady Salmakia, he rescues Lyra from the cave where her mother has hidden her from the Magisterium, which has become determined to kill her before she yields to temptation and sin like the original Eve. Will, Lyra, Tialys and Salmakia journey to the Land of the Dead, temporarily parting with their dæmons to release the ghosts from their captivity. Mary Malone, a