In this funny chapter book from the bestselling middle grade adventure series, a world traveling journalist mouse hunts for treasure with his family. My sister had come up with a new way to torment me. She'd combined my two least favorite things—travel and ghosts! Thea had heard rumors of a haunted pirate treasure buried on a desert island. And before I could say "avast ye scurvy rats," she'd dragged me into her treasure hunt! Praise for Geronimo Stilton's books: "Lightning pace and full-color design will hook kids in a flash." — Publishers Weekly