DESC: It all started the night of the sleepover at Yally's house. It was the usual gang, including Little Monster and his wacky but lovable friends, Yally, Little Laff, Errg, Ickky, and Jerry Bombanat. The next morning, Mrs. Yallypappus is terribly upset to discover that some of the smells in her kitchen have been switched: the orange juice smells like the peanut butter! Even worse, the smell switching has spread all over the town of Monsterville. It's up to Little Monster Private Eye and his trusty assistant, Detective Kerploppus, to get to the bottom of the stinkiest case so far. See if you can help them find out whodunit.