Episode Title:Stone Me.Episode Description:The Countess Amnesia of Megalomania and her butler Kelp hire the brothers to steal the world's most famous diamond, Belshazzar's Bunion, from the British Museum for the insurance money; after they have a fake of it made by forger O. Lagge and swap it with what they believe is the real one at the British Museum, she reveals that she kept the real one all the time, because she knew they would try to steal it.