Sumiko Kobayashi is called to be a jury for a murder Tadashi Ishigaki. Toshio Iwamatsu, a burglar who broke into Ishigaki's home, is held accounted for the murder and Eri Kisaki is assigned as his attorney and Reiko Kujo acts as the prosecutor. Kogoro, Ran, and Conan attend the hearing where Ishigaki's housemaid and brother-in-law deliver their testimonies of discovering the body. Unable to find the murder weapon, the court ends without a decision and will resume the day after. During the session, Sumiko notes aloud that the painting in Ishigaki's room is upside down prompting Kogoro and Conan to investigate the room. Inside the painting, they find a document stating Iwamatsu burrowed money from Ishigaki. Conan deduces the culprit took a document and placed the painting upside down in his rush and discovers that a vase in the room is missing after Ishigaki's murder.
