A steel-clad fiend terrorizes Tokyo, raiding clock shops. Detective Kogoro Akechi uncovers a map hidden in a prized clock, leading to a uranium deposit. He deduces the fiend is his nemesis, the Fiend with Twenty Faces.
Kogoro Akechi
Marquis Genjiro Mizuno
Yoshio Kobayashi
Shoichi Mizuno
Mrs. Mizuno
Chief Inspector Nakamura
Shiroemon Akaboshi
Dr. Takayasu
Detective Kogoro Akechi
Director
Writer