Geronmino Stilton: Lost Treasure of the Emerald Eye

This is the blurb from the back of the book

It all started when my sister, Thea, discovered an old, mysterious map. It showed a secret treasure hidden on a faraway island. In no time at all, my sister dragged me and my cousin Trap into her treasure hunt. It was an adventure I'd never forget....

This is a series I also love. The author played with the words e.g fabumouse, Ratszikistan, famousely and more. The three characters I liked are Trap because he is entertaining, Benjamin because he is such a sweet mouselet, and lastly Geronimo because Trap always plays pranks on him and Geronimo always falls for it and that is funny. I would rate this book a 10/10.
thanks for reading!! :)