The Tiger Moth (1965)

The Tiger Moth 1965 / 불나비 1965 / Bulnabi

A man makes his sister get married to a rich impotent man. After that, she makes love affairs with a lot of men. Whenever she meets men, each dies one by one. The young lawyer happens to meet her. At first he gets close to her for love, but he has interest in the case little by little and is involved in it. Her husband is revealed to be the murderer in the end. But the husband is burned to death and she leaves after rejecting the lawyer. (Source: KMDb)