Myra's Bed (1967)

Myra Brown has married an older man who is unaware of her infidelities with the customers at their cafe across the street. One day, he informs her that he will be away all night and she entices a number of customers, both men and women, to come to her house for sex. During the evening, two men sexually abuse her, a lesbian fights her for the favors of another woman and another lesbian and a handsome stranger have sex with her. She is murdered by a vicious sadist, who is in turn killed by her vengeful husband.