Midsomer Murders S15E01 - The Dark Rider

When Bentham DeQuetteville falls to his death from the roof of Quitewell Hall after seeing a headless horseman, his aristocratic family seem more concerned about their forthcoming Civil War re-enactment than the incident. As DCI Barnaby and DS Jones try to find out the truth behind the ghostly figure, their investigation uncovers shocking secrets about the DeQuettevilles.