This episode is a standalone "filler" caper that shifts the action from London to Brazil, centering on a legendary pirate treasure and a clever subversion of a classic heist trope.
While most of Part 6 focuses on a central mystery involving Sherlock Holmes, this episode is part of a series of guest-written standalone stories. This particular episode was written by Shigeru Murakoshi , though the following episode (Episode 10) was written by the legendary Mamoru Oshii ( Ghost in the Shell ). Review: Part 6 “Episode 9 ~ The Jet-black Diamond” LupinIIIPartVI_Ep_09_ITA.mp4
The file "LupinIIIPartVI_Ep_09_ITA.mp4" refers to the Italian-dubbed version of of Lupin the 3rd Part 6 , titled "The Jet-Black Diamond" (original Japanese: Shikkoku no Daiyamondo ). This episode is a standalone "filler" caper that
In a classic Lupin-style irony, the "Jet-Black Diamond" is revealed to be black pepper . A century ago, pepper was so valuable that it was nicknamed the "jet-black diamond," making the "treasure" worthless in the modern day. Review: Part 6 “Episode 9 ~ The Jet-black
Fans have jokingly compared this episode to One Piece due to its focus on pirate treasure and a scene where Goemon is seen training by slicing a giant squid .
The ending features Zenigata with a turtle, which is a subtle nod to a similar scene from the classic Lupin III Part 2 .
The series is known in Italy as "Lupin III - Una storia senza fine" ("An Endless Story"). The Italian dub for Part 6 notably recast almost the entire main cast except for the voice of Jigen.