Lyra and Will find themselves at the center of a battle between the forces of the Authority and those gathered by Lyra's father, Lord Asriel.

"The windows between the many worlds have been sealed and the momentous adventures of Lyra Silvertongue’s youth are long behind her—or so she thought. Lyra is now a twenty-year-old undergraduate at St. Sophia’s College and intrigue is swirling around her once more. Her daemon Pantalaimon is witness to a brutal murder, and the dying man entrusts them with secrets that carry echoes from their past. The more Lyra is drawn into these mysteries,...