Geronimo Stilton has taken the world by storm! Funny and adventurous stories with colourful, engaging text design from the UK publishers who brought you Diary of a Wimpy Kid. Perfect for both avid and reluctant readers of 5+ Mona Mousa Code. Geronimo Stilton loves to solve a mystery! So when his sister Thea hears of a secret hidden in Mouse Island's most famous painting - the Mona Mousa - they set out to crack the code. The trail of clues leads them beneath the streets of New Mouse City, where the most fabumouse discovery awaits! Features: over 75 million copies sold; and Geronimo Stilton is the publisher of The Rodent's Gazette, Mouse Island's most famouse newspaper. In his spare time, Mr. Stilton enjoys collecting antique cheese rinds, playing golf, and telling stories to his nephew Benjamin. He lives in New Mouse City, Mouse Island.