Butterflies-Series 3 (1979)

Ria Parkinson is an outwardly normal housewife undergoing a rather profound middle-age crisis. Married to Ben, a dentist who spends his off-hours collecting butterflies, and the mother of two indolent teenage boys, Ria cannot help feel that something is lacking in her life.

Thus it is almost inevitable that Ria entertains the thought of straying from her marital vows in the company of Leonard Dutton, a wealthy businessman whom she met by accident during one of her rare forays outside her home.