Pinter's Betrayal gets to the heart of the matter

About a seven-year affair between a married man, Jerry, and a married woman, Emma, the play was inspired by Pinter’s relationship with BBC television presenter, Joan Bakewell.
The two are betraying their spouses, but Jerry is also betraying his friend, Robert, who is Emma’s husband. Robert, a publisher, also has affairs, while Jerry, a literary agent, is married to the unseen Judith, who might also be cheating.