Detective Umon’s services are called upon when ronin Yaichiro is killed with a peculiar weapon, a stone wrapped in a towel.
Ryutaro Otomo
Kotaro Satomi
Eitarō Shindō
Satomi Oka
Hiroko Sakuramachi
Kikuko Hojo
Kyoko Aoyama
Mikijiro Hira
Ikkō Ōkuni
Shinnosuke Ogata
Ichiro Fukui
Itoshi Yumeji
Koishi Kimi
Sonosuke Sawamura
Yataro Kurokawa
Michitarō Mizushima
Shunji Sakai
