Episode 516: Furinkazan - The Mysterious Armoured Knight
Scenario: Kogoro is hired by the Torada family to solve the murder of Yoshirō Torada; Yoshirō was swept away by a tornado and was found by an unknown culprit, who instead of helping him, left a dead centipede beside Yoshirō and left him to die. They believe the culprit is from the Tatsuo family, a family whom they share a mutual hatred for.
A centipede was found next to Yoshiro's body. At the same time, Heiji is hired by the Tatsuo family to investigate the death of their son, Kōji Tatsuo, who was found buried under a pile of rocks, bludgeoned to death, and had a dead centipede placed beside his body. It was placed there, meaning that someone found him dying, but refused to help him.
Koji's body was found in a pile of rocks with a centipede next to it. During the investigation, Conan, Heiji, run into a third detective named Kansuke Yamato who is investigating the same case. Their investigations lead them to believe the victims and serial killer are somehow related to an incident six years ago, where a respectable officer name Kuroto Kai was found dead during his mounted archery practice. They learn that Kai's body, which sustained injuries from falling off a cliff, died of emaciation which means he was still alive after his fall and that someone left him to die.
No centipede was found next to Kai's body. That night, Ran and Kazuha spot the shadow of a moving Takeda Shingen armor. When Ayaka Tatsuo, hears of this, she becomes hysterical and locks herself in the bathroom. Moments later, Ayaka is found hanged on a tree with a gag around her mouth and a dead centipede under her body.
A centipede was found next to Ayaka's body. They learn from the Tatsuo family that the centipedes are a reference to Takeda Shingen's soldiers which were referred to as "The Centipedes". The families also revealed that the three victims along with Akira Tatsuo and Shigetsugu Torada were digging around and searching for Takeda Shingen's legendary treasure. Conan and Heiji's investigations lead them to believe the murderer is following the fūrinkazan and that the next culprit shall die in a death related to fire. Elsewhere, Shigetsugu combusts into flames near a railroad track.