The cast and crew of “Midsomer Murders” reflect on their experiences in the deadliest ‘county’ in all of England. The special investigates the much loved DCI Tom Barnaby (John Nettles) and the mysterious mayhem of  Midsomer. MIDSOMER MURDERS: SUPER SLEUTHS airs on Monday, March 10, at 8:30 p.m. on KTWU-HD, Digital Channel 11.1.