Geronimo Stilton

Clean Sweep (1x15)

Air date: Jan 11, 2010

When a string of high-end robberies hits New Mouse City, followed by Thea's disappearance, Sally starts spreading rumours that Thea might be the culprit. Geronimo is on the case. He, Trap, and Benjamin discover that the real villain is an old acquaintance of theirs -- Prince Nogouda, and he's in need of a princess.