When Geronimo Stilton learns someone wants to steal the antique silver skates being offered as a prize in Mouse Island's annual winter Ice Skating Championships, he races to uncover the mysterious thief and save the prize.

Geronimo tries to enjoy his seaside vacation even though his hotel is dilapidated.

"Oh, no! One of the special miceking helmets in miceking chief Sven the Shouter's private collection has been stolen! Could it have been taken by the vilekings -- the rival mouse clan? The micekings journey to the vilekings' village to find out . . . and while they're there, the dragons attack! Can all the mice work together to save their fur?"--Page 4 of cover

My sister, Thea, is the mystery-loving rodent, not me! But somehow I found myself going undercover to get to the bottom of a case. Slimy Swiss balls -- I hardly knew where to start! Geronimo Stilton, Secret Agent Mouse? Maybe I could get used to that. ...

Geronimo Stilton travels back in time to ancient Rome, the great Mayan Empire and the palace of Versailles during the age of the Sun King, where he experiences wild historical adventures.

When their cousin becomes trapped in Transratania, Geronimo's sister Thea involves him in her rescue mission.

I am not the kind of mouse who spends money on useless things. But one day I kept getting packages of things I did not order or need. Someone on the Internet had stolen my identity! Professor Margo Bitmouse, a well-known computer expert, helped me track down the hacker. Could I find the thief before my reputation is was ruined?

Geronimo Stilton gets caught up in the World Karate Championships, thanks to the efforts of Bruce Hyena and Piccolo Tao, Bruce's super-sporty cousin. Geronimo only has a week to become real champion material! Will Geronimo manage to overcome his fears in order to win the competition?

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.

When, in the process of testing his newest time machine, Professor von Volt accidentally brings a triceratops, Helen of Troy, Attila the Hun, Charlemagne, and Christopher Columbus to present day New Mouse City, it is up to Geronimo and his friends to return them all to their own times and places--without being eaten by a T-Rex or skewered by Trojan warriors.