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!
Series
89 primary books203 released booksGeronimo Stilton is a 203-book series with 81 primary works first released in 1883 with contributions by Geronimo Stilton, Elisabetta Dami, and Kathryn Cristaldi.
Featured Series
9 primary booksCreepella von Cacklefur is a 9-book series with 8 primary works first released in 2010 with contributions by Geronimo Stilton.
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