Diary of a Mad Housewife

Diary of a Mad Housewife is a movie starring Richard Benjamin, Frank Langella, and Carrie Snodgress. A housewife with an abusive husband has an affair with a writer.
Tina Balser is a bored New York housewife-mother married to Jonathan, a pompous, social-climbing lawyer who ridicules her in front of their children, criticizing everything she does or wears. She begins an affair with George Prager, a dashing, successful, and blatantly sadistic writer.