Konfrontace (1971)

A wealthy New York business executive receives an anonymous letter stating that his beautiful wife, who lives in the whirlwind of everyday pleasure in a high-powered company, is not the sweet, guileless, green-eyed beauty her husband perceives her to be, but a calculating, evil creature who is only interested in herself and her own gain. He, however, refuses to dwell on the contents of the letter, but only until the crime is committed.