It's a curious case for Geronimo in this special edition adventure! Rancid ricotta! Something strange was happening in New Mouse City. Rodents were suddenly getting sick with stomachaches, hiccups, and weird green warts -- and it seemed to be related to cheese! We mice eat a lot of cheese, so this was serious. My detective friend, Hercule Poirat, asked me to help him investigate. Could we solve this mystery and save our city? BONUS! After the story, read an extra Mini Mystery adventure and jokes galore!