Upon arriving at Umeda's apartment, however, the trio were shocked to find their host dead, having been strangled to death with a rope. While it initially believed that a man Jiro, Yoko, and Minoru ran into on their way to her house (later identified as Masatake Shimizu) had broken in and killed Umeda to rob her, Conan Edogawa deduced the truth: Minoru killed Umeda, and later sent a photo of her in her clown costume to Jiro and Yoko and used a doll lookalike of her to give himself an alibi and cover his tracks.
The investigation had revealed that Umeda and Minoru were romantically involved, and after confessing to his girlfriend's murder, Minoru posthumously revealed Umeda as a villainous blackmailer. As a result of their relationship, Umeda gave Minoru benefits regarding their work, a gesture Minoru was happy with. But when Minoru began trying to pursue another relationship, the evil Umeda threatened to destroy her boyfriend's career if he broke up with her, driving Minoru to kill Umeda to escape her stranglehold.