The Case of the Earl of Erroll

1941. The 22nd Earl of Erroll is found murdered with a bullet through the head along the Nairobi-Ngong road at the outbreak of WW2. Was it the the cuckolded Sir Jock Broughton who pulled the trigger, or his young social-climbing wife? Or was it one of the Earl's many ex-lovers or their aggrieved husbands? Or was the indiscreet Earl a victim of a political assasination by British authorities?