**Don't miss the second series of His Dark Materials on BBC One this November.**A brand new short story set in the world of His Dark Materials and The Book of Dust by master storyteller, Philip Pullman. Serpentine is a perfect gift for every Pullman fan, new and old. 'Lyra Silvertongue, you're very welcome . . . Yes, I know your new name. Serafina Pekkala told me...