Killing cousins

Suburban housewife Willie Hogan is selfish, bored, and beautiful, passing her time at the country club and having casual affairs. Her husband Howard doesn't seem to care particularly - until one night she comes home from a party to discover he has packed his things and intends to leave her for good. Panicked, Willie grabs Howard's gun and shoots him dead. With the help of her current paramour, Howard's clever cousin Quincy, the body is disposed of - but unbeknownst to either of them, their problems are only just beginning...