Lupin III: Operation Return the Treasure
Original Title：ルパン三世 お宝返却大作戦!!
Languages:
- French: Edgar de la cambriole - Opération diamant
- English: Lupin III: Operation Return the Treasure
- Japanese: ルパン三世 お宝返却大作戦!!
- Chinese: 鲁邦三世 宝物返还大作战
Lupin the 3rd: Operation Return the Treasure (ルパン三世 お宝返却大作戦!!), is the 15th Lupin III TV special, which originally aired on August 1, 2003. The story follows Lupin after he robs a Moscow casino and sets his sights on the 'Trick Diamond.' He travels to the estate of the deceased master thief Mark Williams, only to discover Williams' dying wish that Lupin return five stolen treasures to their original locations within seven days. Success would reveal the Trick Diamond's location and unlock a vast treasure. However, Lupin faces opposition from both the police and the mafia, making his quest all the more difficult. Directed by Jun Kawagoe, this special blends adventure, action, comedy, and mystery. It is available on multiple streaming platforms and has been released on Blu-ray. The special holds a score of 7.28 (out of 10) on MyAnimeList, demonstrating a high level of user appreciation and popularity.