Detective Okamoto
Fujichiyo Kasuga
Mizuno, the Librarian / The 'Vapor Man'
Reporter Kyoko
Police Scientist
Sergeant
Mean Detective
Dr. Sano
Jiya (Fujichiyo's Attendant)
Police Chief
Official
Editor Ikeda
Bank Manager
Detective Fujita
Kyoko's Fellow Reporter
Nomura the Robber
Fujichiyo's Teacher
Man in Library
Doomed Burly Guard
Journalist (Desk editor, Ikeda)
Wife
Kajimoto (as Jirô Kumagai)
Policeman Ozaki
Policeman Nakatani
Senior Prison Guard
Cop
Metropolitan Police Executive
Doomed Shooting Guard
Member of crime laboratory
Audience Member
Librarian
Reporter
Woman in Detention Cell
Fujichiyo's Driver
Dead Treasurer
Man in Detention Cell
Nagauta
Shamisen
Hayashi fue
Hayashi kotsuzumi
Hayashi ôtsuzumi
Hayashi taiko
Hayashi ôdaiko
Transitional Vapor Man
Bystander
Narrator / Mizuno (voice)
Bank Clerk (uncredited)
Reporter (uncredited)
Dr. Tamiya's Assistant (uncredited)
Man in Detention Center (uncredited)