Plot
Detective Umon’s services are called upon when ronin Yaichiro is killed with a peculiar weapon, a stone wrapped in a towel.
| Writer | Mitsuzō Sasaki |
|---|---|
| Director | Eiichi Kudo |
| Actor | Ryutaro Otomo, Kotaro Satomi, Eitarō Shindō |
| Country | Japan |
| Production | Toei Company |