Geronimo Stilton (2009)

S1E15 Clean Sweep

As a series of upscale thefts plague New Mouse City and Thea goes missing, Sally begins to circulate whispers suggesting that Thea could be behind it all. Determined to uncover the truth, Geronimo teams up with Trap and Benjamin to investigate. Their search leads them to an unexpected foe from their past—Prince Nogouda—who is on a quest for a princess of his own.