A Peculiar Problem (Book #2) - Kimberly Pauley - Bog

Fresh from surviving The Euphonium, Twig and his friends find themselves mixed up in a case of missing princesses. Rumour has it that a beautiful-but-trapped princess is in need of rescuing, and somehow Vile's sister Nasty is involved. Will Twig, Vile and friends manage to sort out this magical mix-up?!