Geronimo Stilton

When the rodent residents of New Mouse City begin succumbing to stomachaches, hiccups, and weird green warts, Geronimo Stilton and his detective friend, Hercule Poirat, race against time to investigate before they also fall ill.

Geronimo, Thea, and their cousin Trap explore an old castle built by Grant Gentlemouse, the founder of New Mouse City, and when they find one hundred keys and only ninety-nine doors inside, they set off in search of the missing room.

Asked by a Bollywood star for help protecting a valuable ruby, Geronimo Stilton and Hercule Poirat are inadvertently cast in the actress's film in spite of limited acting skills and are horrified when an anonymous thief makes off with the ruby.

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

When, in the process of testing his newest time machine, Professor von Volt accidently brings a triceratops, Helen of Troy, Attila the Hun, Charlemagne, and Christopher Columbus to present day New Mouse City, it is up to Geronimo and his friends to return them all to their own times and places--without being eaten by a T-Rex or skewered by Trojan warriors.

When pirate cats threaten Mouse Island, Professor von Volt sends Geronimo Stilton and his friends back through time to ancient Greece, Atlantis, and Stonehenge to try and find out how ancient civilizations were able to find peace and avoid war--only to find that the key to peace was under their whiskers the whole time.

"It's the grand opening of Traps new superstore, but nothing is working. The lights won't turn on, the doors won't open, and the loudspeaker is broken. Geronimo must figure out who is trying to sabotage the grand opening"--

When Geronimo agrees to be a caddie for his grandfather in a golf tournament, he and Special Agent OOK team up to prevent the theft of the Super Mouse Cup.

The Harmony Stone has been stolen from the Crystal Castle, and without it the Kingdom of Fantasy is vulnerable to an ancient enemy, The Invisible Army; Geronimo, together with Queen Blossom's daughter, Winglet, embarks on a mission to find the ancient crown which will defeat the Invisible Army and restore harmony to the empire--but they must make it back to the Crystal Castle before it is overwhelmed by the enemy.