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.
Kuniko, the Mother
Kinuko Kakinuma
Kakinuma
Kawashima
Susumu Ogasawara
Kuniko's younger brother
Fumie
Hisako Kanematsu
