The Scarlet Camellia

In this Japanese drama, a young woman begins murdering all those responsible for her ailing father's condition. First she torches her parents' villa, and then slaughters all her lascivious mother's lovers. Because the girl is so outwardly sweet and innocent, the detective looking into the deaths does not suspect her. Unbeknownst to him, the girl plans on turning herself in, but not before she kills one more person--her real father. Later she changes her mind, but when his good wife learns of his philandering, she commits suicide.