Geronimo Stilton Heromice #2: Robot Attack

Muskrat City has been struck by a giant blackout and it's so dark, no-one can see a whisker! A gang of criminal robots is robbing the city's jewellery stores and it's up to Geronimo Superstilton and the Heromice to figureout who's behind the attack. Will our heroes be able to solve the mystery?