Lost Treasure of the Emerald Eye (Geronimo Stilton, No. 1)This book gets tons of checkout at the library.. Meet Geronimo Stilton, the not-so-intrepid reporter who gets caught up in adventure after adventure. Oh yes, he happens to be a mouse. Kids love his conversational style and the colorful illustrations and typography that decorate every page One of the great books for boys, reluctant readers. Beginning chapter book. A nice book to get if you know a kid who likes Captain Underpants.