Geronimo Stilton, editor of "The Rodent's Gazette," hates Halloween, but Thea has decided to publish a book about the spooky holiday, and his nephew's excitement leaves Geronimo no choice but to participate.

The discovery of an old map by his sister Thea leads Geronimo and his family to search for buried treasure on a faraway island.

When an impostor attempts to take over "The Rodent's Gazette," Geronimo Stilton enlists the aid of his sister, Thea, and his cousin, Trap, to reverse the scheme.

Geronimo follows clues in a diary all the way to Mouse Everest in search of his old friend Professor von Volt who has mysteriously disappeared.

When Geronimo Stilton's grandfather, the founder of "The Rodent's Gazette," decides to write the first guide to a place so remote it attracts no tourists, he insists that Geronimo join him on an expedition there.

Geronimo goes to Athens to report on the Olympics, and after observing some of the games he and detective Hercule Poirat become suspicious about Cyrus von Snootrat who seems to be winning every Olympic event and they decide to investigate him.

When mysterious things begin happening at the waterfall deep in the forest, Colette, Nicky, Pamela, Paulina, and Violet use their investigative skills to find out whether Vissia de Vissen is up to something nefarious.

When Geronimo travels to New York City for Christmas, he accidentally switches luggage with another passenger, so he travels all over the city searching for the bag's owner and his own bag, which contains his Christmas presents.

Traces the story of the influential 19th-century female journalist whose series of critical articles on John D. Rockefeller's business empire established her prominence as a shaper of public opinion.

When Geronimo finds he will be spending the holidays alone he becomes depressed, but then discovers an amazing surprise that teaches him the true meaning of Christmas.