Drama based on a true story. Kenya 1940 - untouched by the Second World War, the British aristocrats in Happy Valley continue their life of decadence, drugs and sexual intrigue. Sir 'Jock' Delves Broughton enters this highly-charged atmosphere with his beautiful young wife, Diana, and the stage is set for tragedy. Within days of her arrival, Diana meets and falls passionately in love with Josslyn Hay, Earl of Erroll, leading to an affair destined to rock society and lead to brutal murder.