Geronimo Stilton

The Gem Gang (1x14)

Air date: Dec 25, 2009

Gary Gudov, world-renowned chess champion, is coming to test his skills against a super-computer -- it's the chess match-up of a lifetime! Fortunately for Geronimo, all is calm and quiet in New Mouse City, so he can leave to attend the event. But when the notorious Gem Gang commits a series of robberies, Benjamin and Thea are left on their own to investigate the crimes.