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.

While visiting a movie set in Hollywood, the Thea sisters set out in search of a thief who has stolen an important reel of film from the studio.

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

In Milan to attend the unveiling of a parchment that contains the original recipe for a traditional holiday bread, Geronimo Stilton is shocked when a thief posing as him steals the recipe, forcing him to catch the culprit and clear his name.

"Moldy Mozzerella, what was that smell? It was my friend Hercule, and he needed my help. Someone was stealing ... garbage! A rascally rodent had been sneaking into the Recycling Plant and taking their trash. With the help of Flora, the plants owner, Hercule and I try to sniff the rat out of the stench. Can we find the thief before he runs away with all our trash?"--Publisher's description.

The Thea Sisters are visiting friends at a lively festival in Spain. But the theft of a precious fan turns their trip into an investigation! They end up hot on the trail of a secret treasure...but they're not the only ones searching for it. Can the mouselets solve the mystery in time? It's a mission full of flamenco dance!--page [4] of cover.