The Darkness of the Prefectural Police (2) Meitantei Conan : Season 1 Episode 811

Police Lt. Shoji Kano is found dead in his home. From the body's condition, Inspector Morofushi reasons that after being strangled, Kano was hung from the ceiling. Later, the culprit sends an e-mail declaring that he will kill three additional people. Sgt. Shinsuke Akiyama is called to Mt. Saijozan by the culprit and is murdered. Inspector Yamato's fingerprints are found on the rope that was wrapped around Kano's neck, so Section One Chief Kuroda puts out a BOLO for Yamato as the suspect.