In Kenya's 'Happy Valley' no one paid too much attention to the privileged colonial set as they farmed their estates, partied until dawn and indulged in extra-marital affairs. Not until Josslyn Hay, Earl of Erroll, was shot dead at the wheel of his Buick in the early hours of 24 January 1941. Some said the good-looking womaniser had it coming. He was a philanderer who could have had any number of enemies who wanted revenge. Ageing Jock Delves Broughton stood trial for Erroll's murder but was acquitted and the mystery remained unsolved - until now. American heiress Alice de Janze had been conducting a clandestine affair with Joss for years. Married into French aristocracy, her stunning be...