Lupin III came to Japan for the phantom treasure, Cherry Sapphire. At the same time, Conan escorts the popular idol Emilio, who is visiting Japan, with Kogoro. When the two cases collide, the beliefs of a great thief and a detective clash!!

They say it takes a thief to catch a thief, but the world's greatest detective begs to differ! In this sequel to the crossover special, Lupin III once again faces off against the tiny genius Conan Edogawa, and the stakes have never been higher. An unknown enemy has kidnapped Fujiko, and the only way for Lupin to save her is by stealing a certain jewel. Meanwhile, Fujiko isn't the only one in danger, as a popular Italian singer receives a note that promises to take his life. It's up to Conan Edogawa to get to the bottom of the mystery, but these two tales have more in common than it might seem! Who is really playing who, and who will come out ahead of the game?
 
(Source: Discotek Media)

Precocious high school student Jimmy Kudo uses his keen powers of observation and astute intuition to solve mysteries that have left law enforcement officials baffled. Hot on the trail of a suspect, Jimmy is accosted from behind and fed a strange chemical which physically transforms him into a grade schooler! Taking on the pseudonym Conan Edogawa, he attempts to track down the people who did this to him. But until he finds a cure for his bizarre condition, Jimmy continues to help the police solve their toughest cases. Can you crack the case before Conan does?
 
(Source: Viz Media)
 
Note: Won the 46th Shogakukan Manga Award in the shounen category in 2001.

This is the first time Monkey Punch's original, classic series has been published in the U.S. International man of mystery and master thief extraordinaire, Lupin III comes from a long line of high stakes bandits, all committed to stealing from the rich and giving to themselves. Fortunately, Lupin tends to avoid robbing society's virtuous and, instead, targets some pretty shady characters. 
Of course, he partners with some pretty shady characters as well: Daisuke Jigen is an ex-mafia hit man who carries himself with a somber demeanor, his trademark black fedora tilted forward to hide his eyes. Goemon Ishikawa is a cipher-like swordsman with samurai-ish overtones who mysteriously fades in and out of Lupin's exploits. Fujiko Mine is the object of Lupin's affections, but, since she is a thief herself, the duo's romance more than occasionally clashes with their competition for big scores. 
The global police force, Interpol, and in particular the tenacious Inspector Zenigata, long to capture Lupin and his gang. Zenigata's relationship with the eponymous master thief is a complicated one, characterized by mutual respect laced with utter disdain. The two have even worked together when it's served both their interests, but they understand that when the crisis ends, they must resume their former wariness and animosity toward each other.
 
(Source: Tokyopop)
 
Note: Chapter/volume counts follow the Tokyopop volume releases, which had a chapter count based on the 1989 Chuokoron-shinsha volumes.

Conan and Kogoro head to the Kingdom of Vespania to save Ran, who was involved in the princess' disappearance. However, Lupin and his friends infiltrate Vespania, going after the royal family's treasure! With the detective's and the thief's paths crossing, how will this end!?

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