Who Is the Informer?

Yōsuke Natsuki

Keiichi Sudo

Yumi Shirakawa

Mineko

Makoto Satō

Detective A

Chikage Ougi

Akemi

Michino Yokoyama

Rumiko

Hideyo Amamoto

Nakao

Kumi Mizuno

Kyoko

Eiko Miyoshi

Tassel

Chieko Nakakita

Sachiko

Ayumi Sonoda

Lady A of the cabaret "Tommy"

Katsue Miyakoya

Chiyo from the cabaret "Tommy"

Senkichi Ōmura

Nishimatsu

Fuyuki Murakami

Detective B

Michirō Minami

Radio Producer

Kichijirō Ueda

Shibata

Natsuko Kahara

Tamae

Yoshibumi Tajima

Komakichi

Shin Kitajima

Sakakibara

Masafumi Takechi

Piece 3

Yaeko Izumo

Rumiko's Mother

Keiji Sakakida

Rumiko's Father

Hideo Shibuya

Akiyoshi

Jun Fujio

Hoshino

Toshiko Nakano

nurse

Yasuhisa Tsutsumi

Radio producer's assistant

Gorô Sakurai

Detective Yamauchi

Kamayuki Tsubono

Detective C

Etsuo Saijo

Detective D

Akira Sera

doctor

Kenzo Echigo

Police Officer

Minoru Itō

Journalist 1

Saburô Kadowaki

Journalist 2

Koji Kamimura

Journalist 3

Yutaka Sada

Department store clerk

Ren Imaizumi

Katsuji Ichikawa

Rumi Konishi

Tadashi Okabe

Shuichi Hosokawa

Toshihiko Furuta

Okayu Taka

Eisuke Nakanishi

Masaaki Tachibana

Toshitsugu Suzuki