The Big Favorite Disappeared at the Grand Race - S2.E142

Enraged at the hypocritical courtesy of English Lord Weather, Lupin accepts a bet over whether he can steal the Lord's horse, Red Arrow. Though he makes attempts while the horse is in transit, and during the hunt, the Lord's counterstrategies are scrupulous, leaving no opening. Lupin makes an impossible announcement: "I will take the horse in the middle of the Grand National Race, before a full crowd in the stands!" In a jumping accident, only the horse disappears.