Enter the world of Geronimo Stilton, where another laugh is always right around the corner. Each book is a fast-paced adventure with lively art and a unique for

Geronimo investigates the rumors of a ghost haunting New Mouse City's subway tunnels, and ends up being frightened when he finds out who the real culprit is.

Geronimo Stilton series #13.

Enter the world of Geronimo Stilton, where another funny adventure is always right around the corner. Each book is a fast-paced adventure with lively art and a