windows between worlds, but each window creates new Spectres. Asriel's opening of the passage from his world to Cittàgazze caused a massive surge in Spectre population, swarming the Cittàgazze world with the soul-devouring spirits. St Sophia's School and College St Sophia's School is where Lyra goes to study the alethiometer after the events of The Amber Spyglass. She then goes on to study at St. Sophia's College. Its location is approximately equivalent to Lady Margaret Hall in Oxford. Worlds The following are the known worlds in the Multiverse: Lyra's world The world in which Lyra and most of the characters in His Dark Materials come from. Northern Lights takes place entirely in this world. There are six known planets in this world and the month of April has an extra day. Will's world Our own world. It is the setting for much of the early part of The Subtle Knife and features briefly at the conclusion of The Amber Spyglass. It is the home of Will Parry, his parents Elaine and John Parry, Mary Malone and several minor characters. While they still exist in this world, Dæmons are invisible here. The Cittàgazze world A modern Mediterranean world with beautiful seas and temperate weather. It is the setting for much of The Subtle Knife and parts of The Amber Spyglass. The Cittàgazze world serves as the crossroads to the worlds because all the windows lead here. The Spectres have been common in this world for generations. Mulefa world A world inhabited by the Mulefa and Tualapi. It has a Savannah/prairie climate. The creatures here have a diamond-like skeleton. It is the setting for much of The Amber Spyglass. The Land of the Dead The underworld in The Amber Spyglass. Lyra and Will are carried across a lake to reach its gate by a ferryman reminiscent of Charon of mythology. Within the books, anyone who has ever died from any world goes there eternally where their ghosts are guarded by Harpies. The Authority turned this world into a prison. Republic of Heaven The name given to the world in which Lord Asriel builds his army in preparation with war against The Authority. The only known inhabitants prior to the Asriel's forces are cliff ghasts, like those in Lyra's world. The land is mountainous and shows signs of volcanic activity. Gallivespian world The Gallivespian characters come from this world, but the trilogy itself