Jerónimo Stilton #15: Mona Moussa's Code

A thin colorful illustrated cover in English language. Do you love art? Yes! So when Thia heard that there is a secret map hidden under the most famous painting in Mouse Island, the Monamouse, I realized that we must get the scoop! We started investigating together, and we quickly discovered secret clues that led us to the most wonderful mouse secret. And all of that is under the streets of New Mouse City!