A curious case for Geronimo! Rancid ricotta! Something strange was happening in New Mouse City. Rodents were suddenly getting sick with stomachaches, hiccups and weird green warts and it seemed to be related to cheese! We mice eat a lot of cheese, so this was serious. My detective friend Hercule Poirat asked me to help him investigate. Could we solve this mystery and save our city? EXTRA! EXTRA! Read an entire bonus Geronimo Stilton story after the...

The enchanted Winged Ring which Queen Blossom gave to Geronimo is missing, apparently stolen by the dark fairy Wither and her dark crow allies, and whoever possesses it gains enormous power and can travel between the Kingdom of Fantasy and the real world--now nightmares are starting to affect Mouse Island, the entire Kingdom is furious with Geronimo, and it is up to one mouse to set things straight and recover the ring.

Geronimo is taking his Benjamin on a trip to Rome to learn the city's history (and keep him from failing fifth grade), but when they arrive they're immediately pulled into the investigation of the "ghost" of a gladiator that seems to be haunting the Colosseum and scaring tourists away.