Geronimo's sister, Thea, is the mystery-loving rodent, not him! But somehow Geronimo finds himself going undercover to g... (more)
Geronimo's sister, Thea, is the mystery-loving rodent, not him! But somehow Geronimo finds himself going undercover to get to the bottom of a case. Geronimo Stilton, Secret Agent Mouse? Maybe he could get used to that... (less)