Detective Umon's Diary, Story No. 6.

An important silent film survives, Kumahiko Nishina's Umon torimonocho rokuban tegara jinenji kidan (The Samurai Detective, aka The Detective Records of Umon, aka Detective Umon Diary: Exploit Number Six, 1930). Umon on his shining white horse stops a conspiracy against the Shogun. Umon was played by Kanjuro Arashi in this early film, & long after in the post-Occupation jidaigeki revival he reprised the role in Kajiro Yamamoto's Muttsuri Umon torimonocho (1955), helping to launch the renewed interest in such films.