The Phantom of the Theater: A Geronimo Stilton Adventure (Creepella von Cacklefur #8)

The famouse opera singer Violetta von Cacklefur is in Gloomeria to perform at the Royal Mousetropolitan Theater! But the mischievous phantom of the theater has an old grudge against her. It's up to Creepella and Geronimo to track him down in the theater's spooky basement... before the curtains rise and he ruins the show!