When the owner of the Daily Rat newspaper thinks Thea Stilton, who has vanished without a trace, is responsible for a recent string of robberies in New Mouse City, Geronimo must employ his "famouse" investigative skills to find Thea - and the truth.

"Geronimo Stilton's dealt with mummies, ninjas, and pirates, but this may be the first time he's come face to face with... ghosts! Can the scaredy-mouse overcome his fears and get to the bottom of the mystery for a big scoop for his newspaper, The Rodent's Gazette? For help, who's he gonna call? His ghost-bustin' relatives, of course! Geronimo and his family need to travel to a haunted museum in Africa for this globe-trekking, teeth-chattering spooky adventure, whether Geronimo likes it or not!"

"Geronimo and friends have to get to the bottom of a crown jewel of a case! Checkmate, cheese-lovers, er, we mean chess-lovers. For once, all is quiet in New Mouse City, so Geronimo Stilton, Editor-in-Chief of The Rodents Gazette can report on an incredible chess match-up. On one side, Gary Goudov, world-renowned chess champion, and on the other side, a super chess-playing computer! But after Geronimo leaves, the infamouse Gem Gang commits a string of robberies that only the Stiltons can untangl

"Geronimo Stilton publicly insults famous Chef Ricardo on his cheese selection in his own restaurant. Geronimo Stilton cuts ahead of an an elderly woman in line. Geronimo Stilton steals ice cream from a little girl. All around New Mouse City, the once upstanding Editor-in-Chief of The Rodent's Gazette is wreaking havoc. Could Geronimo be suffering amnesia? Is he mind controlled? Or has he finally joined the dark side? Only Benjamin, Thea, and Trap can clear the Stilton name!"

While investigating the mysterious brie-smelling monster roaming around the port of New Mouse City, Geronimo and his friends are derailed from their mission by the dreaded Captain Blackrat, who commandeers their ship.

"When Geronimo Stilton gets signed up for a dating app, will he get matched with the rodent of his dreams, or will it be a mismatch? Thea Stilton worries Geronimo Stilton, her brother and famouse Editor-in-Chief of The Rodent's Gazette, may be living the lonely bachelor life. With Ben's help, they sign Geronimo up for a dating service. But what happens when the service gives him the most unlikely match?!"

When reports of a mummy terrorizing the New Mouse City Museum flood the Rodent's Gazette's telephone lines, Geronimo Stilton, editor-in-chief, searches for an explanation to prove that there is no mummy.

"Geronimo Stilton is granted a special interview with the great Sourishi, who lives in isolation and rarely gives interviews. To reach him, Geronimo and company must take the Rodent-Express, a steam engine that zigs and zags across perilous terrain and steep mountains. But, during the journey, Bugsy Wugsy mysteriously disappears! Can Geronimo crack the case before the end of the line?"--Provided by publisher.