When the only son of a working class woman is fatally struck by a car driven by the adulterous wife of a company president in a hit-and-run, the victim's mother changes her identity and infiltrates the couple's home to work as their maid, plotting to murder their similarly-aged son.

Hideko Takamine
as Kuniko, the Mother

Yōko Tsukasa
as Kinuko Kakinuma

Eitarō Ozawa
as Kakinuma

Daisuke Katō
as Kawashima

Jin Nakayama
as Susumu Ogasawara

Toshio Kurosawa
as Kuniko's younger brother

Natsuko Kahara
as Fumie

Kumeko Urabe
as Hisako Kanematsu

Yoshio Inaba
as

Takeshi Katō
as