The Secret Games trilogy of films.
A bored and neglected housewife joins a local escort service and soon sinks deeper into trouble when she finds that she's not permitted to quit when the work gets tough.
A performance artist has an affair with a call girl and then starts having a crisis over the adultery.
A neglected housewife of a busy husband who is a doctor turns to prostitution to pass the time. One of her customers develops an obsession with her and begins stalking her.
