In Book 3 of the Diary of a 5th Grade Outlaw illustrated novel series, it's Halloween, and the merry misfits are in for more tricks than treats! When Bonus Bucks start disappearing from teachers' desks, Nadia immediately blames Wilu, the new kid in class. Robin launches "Mission Make Wilu a Friend" to figure out if he's really the Bucks Bandit—but it's hard to befriend someone who's determined to go it alone! Will Robin win Wilu over and learn the truth about the disappearing bucks?