More than 18 million Geronimo Stilton books in print!Finally, I was about to leave for a relaxing vacation all by myself. I was ready to kick back and connect with nature. But somehow, my peaceful trip turned into a crazy treasure hunt in the beautiful Black Hills of South Dakota with the entire Stilton clan in tow! Our journey even included a hot-air balloon ride to Mount Rushmore. Holey cheese! This was one adventure I'd truly remember.

Geronimo's sixth magical expedition! I, Geronimo Stilton, was shocked to find myself back in the Kingdom of Fantasy for a sixth time. I was needed to fulfill the Ancient Gemstone Prophecy!The evil empress of the witches was after the Royal Sapphire. If she united it with her Royal Ruby, it would give her immense power. The entire Kingdom of Fantasy was in danger! It was up to me to find the two gemstones first, with the help of new friends -- and this time, I had to travel in disguise. Cheese niblets! What an incredible journey!

Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship! The Thea Sisters are visiting a friend in Ecuador who has a sweet job -- he runs a chocolate factory! His factory is in the running for a major award for its environmental methods. But suddenly, chocolate production starts to malfunction. Is it sabotage? It's up to the Thea Sisters to solve this mouthwatering mystery!

Enter the world of Geronimo Stilton, where another funny, cheesy adventure is always right around the corner. Each book is fast-paced with lively art and a unique format kids 7-10 will love.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?

Enter the world of Geronimo Stilton, where another funny adventure is always right around the corner. Each book is a fast-paced adventure with lively art and a unique format kids 7-10 will love.After being enrolled in the Song Festival, Geronimo Stilton's song, "Welcome to New Mouse City," goes to the top of the charts and makes Geronimo a star, but very few CDs are sold after the festival. Will Geronimo and his detective friend, Hercule Poirat, be able to solve the mystery?

Enter the world of Geronimo Stilton, where another funny adventure is always right around the corner. Each book is a fast-paced adventure with lively art and a unique format kids 7-10 will love.Oh, how I hate traveling! So when I got an invitation to visit a long-lost relative who lives far, far away, I wasn't squeaking with joy. But Thea, Trap, and Benjamin thought it sounded fabumouse. They dragged me along to the crazy castle on Penny-Pincher Peak. Rat-munching rattlesnakes! I never should have agreed to go with them. . . .

Enter the world of Geronimo Stilton, where another funny adventure is always right around the corner. Each book is a fast-paced adventure with lively art and a unique format kids 7-10 will love.Okay, I'll admit it: I'm a bit of a cheesy mouse from time to time. What can I say? I'm a romantic! That's why Valentine's Day is one of my favorite holidays. This year I had a date with a very special rodent-- Petunia Pretty Paws! But then I got a call from my private investigator friend Hercule Poirat. He had a mystery to solve, and he desperately needed my help. The most beloved, romantic, and famous painting in New Mouse City had been stolen! Now I had to help Hercule AND impress Petunia at the same time. Holey swiss cheese, what was a gentlemouse to do?

Enter the world of Geronimo Stilton, where another funny adventure is always right around the corner. Each book is a fast-paced adventure with lively art and a unique format kids 7-10 will love.It was Valentine's Day in New Mouse City, and I couldn't wait to celebrate! I had sent valentine cards to all my friends and family members. But when I opened my mailbox on the morning of February 14th, it was empty! Had everyone forgotten about me? Was I destined to spend Valentine's Day alone in my mousehole, sobbing, with only my pet fish to console me? It was starting to look like a true Valentine's Day disaster!

Enter the world of Geronimo Stilton, where another funny adventure is always right around the corner. Each book is a fast-paced adventure with lively art and a unique format kids 7-10 will love.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's sister Thea Stilton narrates this action-packed adventure!The Thea Sisters have been invited to Egypt to participate in a fabu-mouse archeological excavation. They are helping to look for the legendary ancient Treasure of the Sun! A precious blue stone scarab may be the key to their search, and they work enthusiastically to uncover the past. But they also discover that thieves are after the hidden treasure. It's up to the Thea Sisters to stop them!