The Super Scam : GS Mini Mystery #1

Hello, mouse friends! Join me, Geronimo Stilton, in solving this whisker-licking-good mystery. Find clues along with me as you read. Together, we’ll be super-squeaky investigators!
A new Superstore has opened in New Mouse City, and Benjamin and I were eager to go shopping. But once we got inside, we had a sudden urge to dance like crazy—and buy everything in sight! All the other shoppers were doing the same thing. Could we figure out what was going on before it was too late?