Geronimo Stilton , is a best-selling book series written by Geronimo Stilton. In the series, Geronimo Stilton is a fictional character, an Italian speaking mouse who lives in New Mouse City on The Island of Mice. A best-selling author, he works as a journalist for the fictional newspaper The Rodent's Gazette . He has a younger sister named Thea Stilton, a cousin named Trap Stilton, and favorite nephew, nine-year-old Benjamin Stilton. Geronimo is a nervous, mild-mannered mouse who would like nothing better than to live a quiet life, but he keeps getting involved in far-away adventures with Thea, Trap and Benjamin. The books are written as though they are autobiographical adventure stories. Synopsis: G'day, mate! I was searching for ideas for my new book, and my friend Petunia Pretty Paws knew just where to find them -- in Australia. Holey cheese, it sounded like a fabumouse adventure! But between surfing with sharks, being chased by poisonous snakes, and getting lost in the outback, I was beginning to wonder if this trip down under was really a good idea. Kangaroos and koalas and crocs -- oh, my! Would I ever see New Mouse City again?