When?A. The series will be back in January.Q. Did John Nettles of ???Midsomer Murders??? play the part of the Duke of Marlborough in the early PBS series ???The Churchills????A. If you are referring to the 1969 series ???The First Churchills,??? the Duke was played by actor John Neville, a veteran of British and American TV and movies, including in a recurring role as the Well-Manicured Man on ???