A Devilish Murder

There live a husband and a wife, who are married so happily that her jealous mother-in-law, his stepmother, poisons her daughter-in-law with the help of her housemaid. This is a horror movie about the revenge done by the woman's ghost who has been murdered undeservedly and reincarnated in a cat, upon the mother-in-law and the housemaid.
(Source: KoreanClassicFilm)