Hands Off My Crush-Boy! (Lizzie McGuire Mysteries, No. 4)

Lizzie offers to sign on for some truly grueling undercover work. Her crush-boy, Ethan Craft, has entered this year's Mr. Teen Hottie pageant-and he's in major trouble. Someone is trying to wreck his chances of winning the top spot! Of course, to ferret out the fink, Lizzie will have to pose as Ethan's girlfriend. It's a tough job but somebody's gotta do it, right? (Added bonus: it's sure to seriously annoy Lizzie's archrival-Kate Sanders, Queen of Mean!)