Inheriting unexpected millions has left reporter Jim Qwilleran looking like the cat who swallowed the canary. While his two Siamese cats, Koko and Yum Yum adjust to eing fat cats in an enormous mansion, Qwilleran samples the life styles of the rich and famous by hiring a staff of eccentric servants.

Twelve-year-old Troy's uncanny gift for predicting football plays proves a powerful secret weapon for the Atlanta Falcons, but a seedy reporter with a vendetta suspects something is going on and sets out to shred the reputations of Troy and star linebacker Seth Halloway.

When seventeen-year-old Harry Fogg undertakes a race against time to win a wager with a member of his famous father's club, he puts to good use the recklessness and fascination with all things mechanical that have caused him trouble in Victorian England.

While visiting a filmmaker friend on the set of a new movie with Thea, Benjamin, and Pandora, reporter Geronimo Stilton investigates mysterious accidents that are plaguing production and causing the film to go off course.

Minou, formerly a cat but now a woman with many cattish ways, helps Tibbs, a newspaper reporter, with information she gets from her many feline friends.