The second collection of the adventures of the titular character. In his never ending mission to protect the books of his library, Rex gets sucked into a book of monsters and has to navigate past (without a proper categorization system!) the various beasts in order to rescue a library patron. There are also other, shorter stories--even one with Cthulhu! The work of a librarian is never dull nor done! This was a fun romp, if not very deep in plot, which might be due to the series ending (low sales and knowing you're being canceled can easily take a creator's energy away). I'm sad to see it go.