Trouble According to Humphrey, Paperback

Humphrey the hamster loves to solve problems for his classmates in Room 26, but he never meant to create one! Golden-Miranda, one of his favorite students, gets blamed when Humphrey is caught outside of his cage while she’s in charge. Since no one knows about his lock-that-doesn’t-lock, he can’t exactly squeak up to defend her. Can Humphrey clear Miranda’s name without giving up his freedom forever?