When the quest to find a cure to an epidemic targeting the citizens of New Mouse City is sabotaged, Geronimo Stilton must figure out who's behind it all before he ends up covered in blue spots too.

When Geronimo's sister Thea gets into trouble while searching for treasure on Easter Island, he and his friends come to help.

Traveling to the planet Jurassix to warn its inhabitants of an imminent comet strike, Geronimo Stilton and his crew encounter ferocious, dinosaur-like beasts who have an appetite for rodents.

Geronimo Stiltonix takes MouseStar 1's broken computer to a distant planet to be repaired by a brilliant inventor, but pirate spacecats attack and steal the device, and the spacemice must retrieve it before the machine can be turned against them.

Geronimo is determined to prove that he's a true friend, even if it means climbing Mouse Everest! Professor Paws von Volt needs him, and that's good enough for Geronimo. Guided by Sherpas and with 'help' from his family, he sets out on an epic rescue mission. But what is that looming shadow following him? And why is Geronimo the only mouse to see it?

Sometimes a busy businessmouse like me needs a nice, relaxing vacation. But of all the rotten rats' luck -- every time I tried to get away, disaster struck. My aunt Dizzy Fur's mouse hole caught on fire, my office was flooded, and our printing press broke down! When I was finally ready to depart, all the good trips were booked up. I was stuck in a flea-ridden old hotel, sharing a room with a bunch of Gerbil Scouts! I couldn't wait to get back to my...

The world's most famouse painting is hiding a big secret! An X-ray of the Mona Mousa reveals a strange riddle. Solving the clues takes Geronimo to the most dangerous parts of the city. But facing the fur-raising rollercoasters and vicious octopuses will all be worth it for the amazing treasure at the end. Won't it?

Exercise? Geronimo? Not a chance! So when he accidentally gets signed up to the Mouse Island Marathon, Geronimo can't pull out fast enough. Unfortunately his family has other ideas, and they soon have a whole fitness plan set out for him. Will Geronimo make it across the finish line on the day?

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,...

"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?"--P. [4] of cover.