It is a good children's book. It's exciting just like all Geronimo Stilton books. The only problem is that it's a bit violent. But it's supposed to be a fun, action-packed adventure book so it's not that bad. For me it's alright because it's not like he really got seriously injured or even worse died. So it's okay. Also, it can't be much of an adventure if there's not a FEW injuries. If the characters are just having good luck and nothing happens to them it's going to be pretty boring. There should be some excitement and mystery.