Philip Pullman's novella Once Upon a Time in the North is a mini-prequel to the His Dark Materials trilogy, set in Lyra's Universe and featuring the first meeting between Lee Scoresby and Iorek Byrnison. It's a little adventure sequence in which Lee crash-lands in an Arctic town and defends a mistreated ship's captain against a corrupt politician. It's a fun story and this time instead of organised religion Pullman attacks big businesses that impose their own interests. Lee Scoresby is a good choice of character to get a spin-off as his sardonic daemon, Hester, was one of the best-characterised daemons in the original novels so she provides a good counterpoint to his personality. A fun little addition to the mythology, with some interesting illustrations and "clues."