Lieutenant Kano is found dead from hanging in his home. From the body's condition, Inspector Morofushi reasons that after being strangled, the body was hanged from the ceiling by someone. Inspector Yamato's fingerprints are found on the rope that was wrapped around Kano's neck....

In the morning, Conan notices a suspicious man watching Amuro at the Cafe. Later, on his way home from school, he spots the same man. Believing something must be up if Conan is interested in him, Mitsuhiko, Genta, and Ayumi follow the man. Conan warns Amuro that the man may be a member of the Black Organization...