Ex libris de librum vermis

After the phenomenal setting off the first book I expected a bit more than unlocking heads and putting whole books in. Maybe I'm already too old and don't enjoy a kids' joke anymore.
Apart from that there are great artworks of getting inside characters' heads which reminded me of an amazing video game Psychonauts.
All in all, though riding the edges of cliches (abused as kid, gay couple, runaway husband leaving retarded child...), authors manage to keep the story engaging and intriguing to ensure readers will stay for the next installment.