Ep. 20: Lupin pursues imposters stealing in his name to their island hideout
Aired on March 5, 1972

A series of thefts are being committed by individuals falsely claiming to be Lupin. Determined to uncover the truth, Lupin tracks these imposters to their secret location. This pursuit leads him to an isolated island that serves as their base of operations. Upon arrival, it becomes evident that the location is not just a simple hideout but a community populated entirely by thieves. Lupin finds himself surrounded by a large group of criminals operating under his identity, turning a simple chase into a confrontation with an entire island of lawbreakers.
Episodes
- Ep. 16 · Fujiko manipulates Lupin into stealing a diamond shipment despite Jigen's valid suspicions.
- Ep. 17 · Lupin and his companions are trapped by Hoshikage Rinko's deadly scheme
- Ep. 18 · Lupin targets Smith's art theft scheme disguised as a beauty contest
- Ep. 19 · The Third Generation Competes for Victory in a Battle of Wits
- Ep. 20 · Lupin pursues imposters stealing in his name to their island hideout
- Ep. 21 · Lupin attempts to rescue Rie from Jooji Takigawa's captivity.
- Ep. 22 · Gordon's crime-predicting computer faces skepticism from Zenigata and Lupin in Japan
- Ep. 23 · Lupin steals disputed ancient gold coins while Zenigata raids his hideout in a final confrontation.