Meitantei Conan S18E08 - 古き傷跡と刑事の魂

Later, Takagi comes to the conclusion that Kibo Dokurou is the serial kller. Conan notices something is strange about Hiramune's dying message, and realizes his message indicates the person who murdered him was a copycat killer. Conan reveals to Sato that Hiramune was actually the serial killer from the past. Conan reveals that Nabei Eiki is the murderer. Takagi who was ordered to bring Eiki to the police station was taken hostage by Eiki. Takagi is shot in an attempt to subdue Eiki from shooting the police. Takagi is later revealed to be saved by a mahjong tile in his shirt pocket.