Philip Pullman returns to the world of His Dark Materials with this magnificent new novel, set ten years before Northern Lights and featuring his much-loved character, Lyra Belacqua.

It is the autumn term and Greer MacDonald is struggling to settle into the sixth form at the exclusive St. Aidan the Great boarding school, known to its privileged pupils as S.T.A.G.S. Just when she despairs of making friends...