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.

Reparto

Eiji Wakasugi

Kogoro Akechi

片山明彦

Marquis Genjiro Mizuno

Takayama Takeo

Yoshio Kobayashi

Shunsuke Nakamura

Shoichi Mizuno

Takako Fujino

Mrs. Mizuno

須賀不二男

Chief Inspector Nakamura

多々良純

Shiroemon Akaboshi

Masayoshi Nara

Dr. Takayasu

桂小金治

Detective Kogoro Akechi