Throughout the
Second World War, aristocrats in the
Kenya Colony's Happy Valley region often led hedonistic lifestyles of indulgence in alcohol, drugs, and extramarital relationships. On 24 January 1941, Josslyn Hay, the philandering Earl of Erroll, was found dead in his car in a secluded area, with his reputation for adulterous relationships preceding him. One such married woman is
Diana Delves Broughton, the beautiful wife of Sir John Henry Delves Broughton, known as "Jock", who is thirty years her senior, with whom she has a pre-nuptial understanding that, should either of them fall in love with someone else, the other party would not impede that romance. Diana has indeed succumbed to the charms of the Earl of Erroll, whose other lovers include the drug-addicted American heiress
Alice de Janzé and the more reserved Nina Soames. The Earl is more serious about this affair than any of his earlier dalliances, and wants Diana to marry him. She is reluctant to leave what she thinks is the financial security of her marriage to formalise her relationship with Erroll (who has no funds or prospects), unaware that her husband is deep in debt. Privately humiliated but appearing to honour their agreement, Delves Broughton publicly toasts the couple's affair at the club in Nairobi, asking Erroll to bring Diana home at a specified time. Delves Broughton appears to be extremely intoxicated for the rest of the evening; once he is alone it is clear he was feigning drunkenness. After dropping off Diana, Erroll is shot dead in his car near the home of Delves Broughton, who is soon charged with the murder. Diana is distraught over losing her lover, as is Alice, who openly masturbates next to his corpse at the mortuary. A local plantation owner, Gilbert Colvile, whose only friend is Delves Broughton, quietly offers Diana advice and solace and ultimately shocks her by proposing marriage. Delves Broughton stands trial. There are no witnesses to the crime and the physical evidence that appears incriminating is also circumstantial. He obviously had the motive and means, but is found innocent, and the scandal comes to an end. De Janzé ultimately kills herself, and Diana discovers further evidence that implicates her husband in her lover's death. After killing their dog and then menacing her with a shotgun, Broughton shoots himself in front of her. The film ends with a fleeing, bloodstained Diana discovering the remaining Happy Valley set partying around de Janzé's grave. ==Cast==