The Prisoner of a Valtan Palace - S3.E12

After much labor, Lupin successfully steals a painting of Lupin the First's beloved. He is less than thrilled to discover that it is in fact a fake. Fujiko enters the scene and explains that it is actually a Valtan forgery. Valtan has the artist and his daughter Sofia captive in his palace; he forces him at gunpoint to recreate his own paintings. Lupin heads off to Valtan's palace to rescue an old friend of his grandfather's and maybe keep a few paintings for himself.