Story of a Detective's Assistant

Keiju Kobayashi

Heikurō

Meiko Nakamura

Toshiko

Sadako Sawamura

Mine

Takeshi Sakamoto

Hirosuke, Toshiko's father

Momoko Kôchi

Yūko

Ichirō Arishima

Senkichi Ōmura

Roku

Nakajirō Tomita

Tsunekichi

Sachio Sakai

Tetsu

Yûko Nogami

Kumiko

Bokuzen Hidari

Heikichi, Heikurō's father

Eiko Miyoshi

Shizu, Heikurō's mother

Takashi Itô

Masao, Toshiko's brother

Ryōko Miyamoto

Michiko, Toshiko's sister