"Geronimo Stilton, crusading news reporter and editor of The Rodent's Gazette, has been working too much and is in desperate need of a break. He is getting sleepy, very sleepy, but he can't actually fall asleep. Geronimo's cousin Trap tells him about a specialist, the Great Ratswami, who hypnotizes mice to help them relax. Shortly after Geronimo's meeting with the hypnotist, New Mouse City is plagued by a crime wave and Geronimo seems even more tired than ever! Something weird is going in New Mouse City, and the totally shocking answer will become front-page news!"--Provided by publisher.

Translated from the Italian. "Based on an original idea by Elizabetta Dami"--T.p. verso. "Based on episode 8 of the Geronimo Stilton animated series 'A me gli occhi'"--T.p. verso. Based on the television program Geronimo Stilton.