Moonlighting Wives (1966)

Mrs. Joan Rand, a seductive but disgruntled homemaker, is fed up with her mundane existence. Craving what she can't afford in life, Mrs Rand has an epiphany: with the help of a close friend, she transforms her stenography service into a high-class call-girl ring right under her husband's nose. As money flows and business flourishes, shrewd Mrs Rand enlists the help of more suburban wives eager to make extra money by satisfying the town's increasing demand for guilty pleasures. But sultry Mrs.Rand is playing with fire. What happens if her oblivious spouse and the police discover that adultery runs rampant in the quiet neighborhood?