When reports of a mummy terrorizing the New Mouse City Museum flood the Rodent's Gazette's telephone lines, Geronimo Stilton, editor-in-chief, searches for an explanation to prove that there is no mummy.

When Geronimo travels to New York City for Christmas, he accidentally switches luggage with another passenger, so he travels all over the city searching for the bag's owner and his own bag, which contains his Christmas presents.

Geronimo goes to Athens to report on the Olympics, and after observing some of the games he and detective Hercule Poirat become suspicious about Cyrus von Snootrat who seems to be winning every Olympic event and they decide to investigate him.

"My friend Hercule Poirat and I were called to investigate mysterious events at the famouse Grand Hotel in New Mouse City. There was a ghost haunting the hotel and scaring guests! It was wearing clanking armor and carrying a ball and chain. I know that ghosts don't exist, but this was pretty spooky. Would Poirat and I be able to solve the mystery of the haunted hotel?"--Page 4 of cover.

When Geronimo finds a golden staircase in his attic, it takes him to the Kingdom of Fantasy. He sets off on an incredible adventure to save the Queen of the Fairies!

"Geronimo receives a mysterious package. It was a coffin. And it was gift-wrapped! It was an invitation to a spine-tingling mystery dinner at Cacklefur Castle. Geronimo, Thea, and Trap find spiders, bats, and ... something slimy. Can Geronimo solve the mystery before he is frightened out of his fur?"--Amazon.com

Oh, what a day! I had just published New Mouse City's first phone book -- and almost every single number was wrong! My customers were out for my fur. So when Thea, Trap, and Benjamin asked me to join their quest for a legendary island covered in silver, I agreed. But no sooner had we set out than we were attacked by a ship of pirate cats! They mousenapped us and threatened to make us their dinner. Would we escape with our lives ... or find ourselves...

Geronimo accidentally signs up for the Mouse Island Marathon and needs to get into shape quick.

When Geronimo Stilton's responsibilities as editor of "The Rodent's Gazette" interfere with his vacation plans, the only place he can still get a reservation sounds like a disaster, especially when he learns who he will have to share a room with.

I was so excited about Christmas, I could squeak! My favorite nephew Benjamin was going to come over, and we were planning to trim the tree and eat lots of delicious holiday Cheesy Chews. But before you could say "cat alert," disaster struck! I slipped over my tail and ended up in the hospital. And then my mouse hole caught on fire! Holey cheese, this was turning out to be the worst Christmas ever.