While Sophie and her friends are exploring, they come across a huge paw print, bigger than they have ever seen, and they are determined to find out what could have made it.

"The illuminating journey of a very special mouse, and the unexpected friendships he makes along the way"--

When Geronimo's fears overtake him, Thea and Trap turn to survivalist Penelope Poisonfur, who leads the 'fraidy mouse into Rattytrap Jungle where he has to eat ant soup, swing on vines across raging rivers, and wrestle snakes.

Bear's efforts to keep out visitors to his house are undermined by a very persistent mouse.

While celebrating his birthday with his family, Geronimo realizes someone has replaced all of his money with counterfeit bills and sets out to find the thieves.

Max is a cute kitten who dreams of becoming a brave mouse-catcher. So he sets off in search of a mouse, and discovers that bravery perhaps is not so important after all.

Clementine is a lab mouse and a genius, but she's lonely. Only with Rosie, a chimpanzee who visits late at night, does she find friendship. When a lab technician frees Clementine, she discovers an outside world and goes in search of a real home--and a way to free her old friends. Clementine is different from other mice: she can calculate the speed of light and she dreams in Latin. The scientists say she's a genius and put her through test after test....

Roger plays a small but important part in the school Halloween play.

When you're with me, Geronimo Stilton, it's always a fabu-mouse adventure! Sally Ratmousen broke some shocking news: The Rodent's Gazette was out of money and in danger of closing. Then Grandfather William broke even worse news to me: I needed to sell my comfy, cozy house in order to save our paper! How terrible! But could I sell it -- and find a new home -- in time to help?

A mouse teacher teaches her mice students how to identify a cat.