Glass Houses (1972)

The libidinous sexual shenanigans of a middle-class Californian family, and deftly explores themes such as marital discord, middle age, adultery, search for one's self, and incestuous desire. Victor is a bored, married businessman carrying on an illicit affair with his attractive, new age girlfriend Jean. His sexually-frustrated, vivacious wife Adele involves herself with community civic meetings to do 'something' for the community. Victor and Adele's nubile nineteen-year-old daughter Kim, has a secret attraction to her father of which she cannot let go. As she cannot have her father, she takes up with a man of the same age, her father's business associate Ted. At one of her civic meetings Adele bonds with her neighbor, pipe-smoking sex novelist Les, and has an affair with him, albeit with ambivalence. Events reach a head when Victor and Jean bump into Kim, and her older lover at a health/new age resort. The pairing of Kim and Ted causes a falling out of the two men, and for Victor to reassess his relationship to the spirited Jean.