Geronimo goes to Greece to report on the Olympics and lands in another mystery.

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

Geronimo travels to Ratzikistan to help his grandfather write a guide book about this remote area.

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 Stilton finds himself in the wild West, where he becomes involved in a showdown with the "wickedest" rat of Cactus City.

A visit to a mysterious clock store leads Geronimo Stilton back to the Kingdom of Fantasy which is facing a crisis: something is making the magical timepiece that measures out the life of Blossom, Queen of the Fairies, run fast so she is aging at an alarming rate--and if she dies, so does the Kingdom.

In Milan to attend the unveiling of a parchment that contains the original recipe for a traditional holiday bread, Geronimo Stilton is shocked when a thief posing as him steals the recipe, forcing him to catch the culprit and clear his name.

Geronimo and his friends set sail to the Ratlapagos Islands to search for a sunken treasure. He soon begins to suspect that they aren't the only ones looking for the treasure.

On his way to the Grand Masked Ball and what promises to be a disaster of a date, Geronimo is once again whisked away to the Kingdom of Fantasy, and this time he must save the Princess of the Vanilla Fairies from an evil wizard who is using the pirate ship, Ship of Secrets, to gather magical objects to increase his power and take over the kingdom.

When Will Mystery calls, the Thea Sisters answer the call because there is trouble in one of the fairy kingdoms: a dragon has been turning all the fairies' precious gems into stone, and wrecking havoc throughout the Crystal Kingdom--and it is up to the sisters to find out why the dragon is destroying this Kingdom and stop him before it is too late.