A Mysterious Sniper Murder Case (Part 2).Seiji Ishimoto tells the police about the threat letters after he's approached by the minister's secretary, Tsuneaki Niikura. When everyone leaves the hotel room, Conan searches for clues. Inspector Meguire questions Richard about Seiji's secretary and reveals she has a motive and shows a picture of her boyfriend who Richard recognizes as the person he bumped into as he left the hotel room. Richard calls everyone to the murder scene where he declares the boyfriend to be the killer. Conan stuns Richard and recreates the murder. Shiro did not shoot Seiji and Tanaka; the gun used in the crime was strapped to the spotlight with a motor that winds a string that pulls the trigger. Afterwards, Shiro took the gun and fled, met up with his accomplice and was murdered. Conan reveals Tsuneaki Niikura as the true killer after he blurts out something he shouldn’t have said; he tried to frame Seiji for the murder after killing Hiraoka by placing the motor in his office. His motive is nothing more than greed as Tsuneaki is next to succeed Tanaka as head of parliament, but he made no plans of retiring soon. As evidence, Tsuneaki’s fingerprints are on the battery inside the remote control. Sending the threat letters to Seiji was just a diversion and he surrender to the authorities.