"The Other Woman" is a 1976 Play for Today which aired January 6, 1976, written by Watson Gould and directed by Michael Simpson.
[1][2] Filmed on a small budget in June 1975, it features Jane Lapotaire, Lynne Frederick, and Michael Gambon.
She meets 17 year old Nikki (Frederick), a closeted, sexually fluid girl who has a seemingly perfect background.
As their relationship progresses, Kim discovers problems Nikki faced despite her privileged upbringing, and her obligation to a pre-arranged heterosexual marriage.
The episode received mostly positive reviews from critics, but generated some mild controversy for its frank and clichéd depiction of lesbian stereotypes.