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.
Thea Stilton and the Dragon's Code These skew a little older than the original Geronimo Stilton books, which both my kids love. Thea is adventurous, and a great heroine, along with her pack of girl cohorts. Juju has read about four in the series so far, and she hasn't gotten tired of them at all. (Read in 2nd grade.)