Tatsuo Saitō
Jôji
Fumiko Okamura
Yumiko
Soichi Kunijima
Yoshiaki, great detective
Takeshi Sakamoto
Uncle
笠智衆
Tokio Seki
Detective's assistant
Junko Matsui
Yôko, Jôji's wife
Shigeru Ogura
Shichiro Sugano
Thief