The world's most famouse painting is hiding a big secret! An X-ray of the Mona Mousa reveals a strange riddle. Solving the clues takes Geronimo to the most dangerous parts of the city, but facing the hair-raising rollercoasters and vicious octopuses is all worth it for the amazing treasure at the end of the trail. Isn't it? The series is perfect for 5 to 8 year old's both avid and reluctant readers due to its expressive typeset, fun illustrations and humorous stories. Supplementary material is available: www.sweetcherrypublishing.com/resources

 

This is volume 15 in Geronimo Stilton .

This book has been graded for interest at 4-8 years.

There are 112 pages in this book. This book was published 2019 by Sweet Cherry Publishing .

In his spare time, Mr. Stilton collects antique cheese rinds. But what he most enjoys is writing books where he tells his fabmouse adventures!