As they delved deeper into the fantasy section, they noticed that some books had strange words and phrases scribbled in the margins. Lily recognized the handwriting as the bookworm's. She told Max that the bookworm loved to play tricks on the characters, making them say and do things that weren't part of their stories. Max and Lily decided to set a trap for the bookworm, using a magical book as bait. They waited patiently, watching as the bookworm emerged from its hiding place and began to tamper with the book.