A wheelchair-bound daughter is told that her mother's death was a murder and asks for an investigation, gradually learning the secret of her own birth.
Mitsuko Iga
Joji, Mitsuko's husband
Akiko, a secretary
Masano, the maid
Kotaro, Iga Kanko's president
Kotaro's second wife
Yukichi, Mitsuko's grandfather
Ryutaro
