Bestselling author Garth Nix's amazing Seventh Tower series is back--now with a great new look! The Dark World is a place of ice, wind, and fury. A veil of black covers the sky. In all the world, only the Castle shines with light. Tal and Milla are struggling to make it to the Castle, each on a dangerous mission. For Tal, a Chosen, the Castle is home--even though he is not welcome anymore. For Milla, an Icecarl warrior, the Castle is a strange and mysterious place. Her presence is a threat that the Castle dwellers want to stop...at any cost. Sinister forces are conspiring against them. It will take all their strength to survive.