When reports of a mummy terrorizing the New Mouse City Museum flood the
phone lines, Geronimo Stilton, editor-in-chief of the Rodent's Gazette,
is on the job! Geronimo is certain there is a logical explanation to all
this, seeks to debunk the theory and prove that there's no mummy. Will
Geronimo get wrapped up in more than he can handle? Is he about to
become ancient history? Is there something, or someone, really lurking
in the shadows of the New Mouse City Museum?