The Cheese Experiment (Geronimo Stilton) - Fun Adventure Book for Kids | Perfect for Bedtime Stories & Classroom Reading

What a cat-astrophe! An outbreak of mysterious blue spots has Geronimo's tail in a twist. Professor Brainymouse and his team are working on a cure, but someone doesn't want them to finish. Can Geronimo find out who in time to save New Mouse City? Or will this be the end of his spotless record?