"The Magician's Left Hand" is the fifth episode of the Blue Jacket series.
Fujiko joins a circus and befriends Luca, a young man who is the heir to the secret and highly sought-after formulas of a now-deceased magician. Luca is enchanted by her. Soon, however, it seems like Fujiko's life is in danger. Lupin and Jigen investigate.
Lupin and Jigen's disguises are similar to those worn in Keep an Eye on the Beauty Contest.