When everyone in Old Mouse City wakes up with an awful stomachache, Geronimo Stiltonoot, a cavemouse, must travel to the Cave of Memories to find the ancient shaman cure.

Geronimo Stilton's ancient ancestor Geronimo Stiltonoot is back in another prehistoric adventure! Geronimo Stiltonoot and his family are off to find a cure for Grandma Ratrock's aches and pains. She's heard that a remedy hides in Cheesy-La, a legendary valley that Geronimo isn't even sure exists. Little does he know that getting there will be an adventure among geysers, volcanoes, and rivers of molten lava! Praise for GERONIMO STILTON...

This NEW Geronimo Stilton series spin-off is set in the Stone Age!Who is Geronimo Stiltonoot? He is a cavemouse -- Geronimo Stilton's ancient ancestor. He runs the stone newspaper in the prehistoric village of Old Mouse City. From dealing with dinosaurs to dodging meteorites, his life in the Stone Age is full of adventure!THE STONE OF FIREOld Mouse City is in an uproar. The most precious artifact in the mouseum -- the Stone of Fire -- has been stolen!...

Geronimo Stilton's ancestor, Geronimo Stiltonoot, must prove his innocence when the grand prize from the Cavemouse Idol competition is stolen.

Geronimo Stilton's ancestor, Geronimo Stiltonoot, investigates a witness's claim of a moving mountain of ice.

Geronimo Stilton's ancient ancestor Geronimo Stiltonoot is back in another prehistoric adventure! It's time for the Stone Age Games, the annual cavemouse sports competition! This year, the saber-toothed tigers want to enter the games, too, so they call a truce. But when their flag goes missing, Tiger Khan blames the cavemice! Can Geronimo track it down in time to keep his fur intact? Praise for GERONIMO STILTON CAVEMICE #1: THE STONE OF...

When the Stone of Fire has been stolen, Geronimo Stiltonut, Geronimo Stilton's ancestor, is on the case to retrieve the artifact from Tiger Khan and his band of fearsome felines.

For cavemouse Geronimo Stiltonoot, life is one prehistoric problem after another! Geronimo Stiltonoot and The Stone Gazette are in the running for the Stone Age Ratitzer: the award for the best prehistoric journalism! But their main competition is Sally Rockmousen, the ruthless host of Gossip Radio -- and she'll stop at nothing to win. Can Geronimo sniff out a scoop in time to defeat her? Praise for Geronimo Stilton Cavemice #1: The Stone...

Geronimo Stilton's ancient ancestor is back in another prehistoric adventure! A mysterious rodent has been shipwrecked on Mouse Island. He's a prehistoric pirate, and he's searching for a lost Stone Age treasure! Geronimo Stiltonoot and his family volunteer to help him on his dangerous hunt. Petrified cheese! Can they find the treasure without going extinct on the way? Praise for GERONIMO STILTON CAVEMICE #1: THE STONE OF FIRE:"[A]n adventure...

For cavemouse Geronimo Stiltonoot, life is one prehistoric problem after another! Geronimo Stiltonoot is competing in a race to Boulder Bay and back! It's dangerous, but it will supply the village cheese maker with rare hot lava peppers, and there's a big prize for the winner. Unfortunately, Geronimo has a lazy, slow, city autosaurus (the cavemice mode of transportation). Can he reach the finish line without going extinct on the way? Praise...