Geronimo, broken-hearted after a failed romance, sets out with his family to explore the Eighth Wonder of the Mouse World.

Geronimo travels to Egypt to interview Professor Alrat Spitfur and learns the secret of the Seven Wonders of the Ancient Mouse World.

It's Halloween on Mouse Island, and it seemed like everyone was out to get me, Geronimo Stilton! My cousin Trap kept pulling scary pranks on me. And then my sister Thea told me I had to write a book about Halloween in less than one day! Before you could say boo, my nephew Benjamin had dragged me to a graveyard to do research. There I met a very spooky mouse who -- yikes! -- tried to lock me up in her coffin! Oh, how would a 'fraidy mouse like me ever...

Holey cheese, it was strange! All across New Mouse City, rodents kept telling me I'd done things I had no memory of. Was I going crazy? Had the cheese finally slipped off my cracker? No, that wasn't it. I soon discovered the truth: There was a Geronimo lookalike going around, pretending to be me! He'd even fooled my sister Thea. Worst of all, he was trying to take over The Rodent's Gazette! I had to get that greedy impostor's paws off my newspaper,...

Geronimo Stilton runs a newspaper, but his true passion is writing tales of adventure. Here in New Mouse City, the capital of Mouse Island, his books are all bestsellers! His stories are full of fun--tastier than Swiss cheese and tangier than extra-sharp cheddar. They are whisker-licking-good stories, and that's a promise! Here are three more of his adventures.

Geronimo goes to a desert island in search of haunted pirate treasure.

Geronimo Stilton finds himself in the wild West, where he gets into a showdown with an evil rat.

Geronimo and friends go to the Eyptian Museum just before Halloween to investigate what seems to be a real live mummy.

Geronimo and his friends travel to his cousin Stevie Stingsnout's wedding far away on Cheap Change Hill and run into trouble.