Geronimo and his friends travel to his cousin Stevie Stingsnout's wedding far away on Cheap Change Hill and run into trouble.

I was just minding my business at home when I got a telephone call. It was my uncle Samuel S. Stingysnout, inviting the whole Stilton family to creepy, faraway Penny Pincher Castle for a big surprise. Moldy mozzarella -- I'm not much of a traveling mouse, and I hate surprises. But Thea, Trap, and Benjamin were going, so I couldn't say no. I could tell this was going to be one super-spooky trip! -- from Amaozn.

It was my most thrilling adventure yet! My old friend Professor von Volt had discovered the location of the famous Ruby of Fire. And before I could let out a squeak of protest, my sister Thea had dragged me into race to be the first to find the legendary gem. The jewel was protected by thousands of ancient booby-traps -- a 'fraidy mouse's worst nightmare? Would I make it through with my fur?

When Geronimo's sister, Thea, heard that there was a secret hidden in Mouse Island's most famous painting, the Mona Mousa, he knew he had to crack the code!

"The Thea Sisters are in Kenya on a photo safari! The mouselets love exploring the magnificent landscape and learning about the animals on the reserve they're visiting. A cub has just been born, but while they're there, he's kidnapped! It's up to the Thea sisters to rescue him in an adventure across the savanna."--P. [4] of cover.

Creepella investigates mysterious holes around Squeakspeare's mansion - could legendary pirate Morgan Blackwhisker be searching for his lost buried treasure?

Geronimo Stilton has to deal with his worst enemies, the pirate cats who have learned to travel back in time to Paris, France. They have a plan to thwart the dedication of the Eiffel Tower.

When Geronimo Stilton finds out that the Pirate Cats are going back in time to Venice in the year 1517, he knows they must be after one thing: The Mona Lisa! Geronimo and friends must travel to Renaissance Italy to stop the Pirate Cats from stealing the Mona Lisa and taking credit for what is arguably the world's most famous painting. But the Pirate Cats have an ace up their sleeve: someone in Geronimo's crew is an imposter!

"The phantom of the subway: When my sister Thea told me a ghost was haunting New Mouse City's subway tunnels, I had to get the scoop! So I set off with Thea, Trap, and my assistant editor Pinky Pick. But we were all in for the fright of our wee mouse lives...because the ghost turned out to be a CAT! The temple of the ruby of fire: It was my most thrilling adventure yet! My old friend Professor von Volt had discovered the location of the famous Ruby...

The Pirate Cats decide to better their offs by getting rid of Professor Volt ; kidnapping him and leaving him in the Cretaceous Period- a time when the earth was occupied by dinosaurs society. Geronimo and his friends must travel back in time 140 million years to save Professor Volt from literally becoming a part of history!