<P> Filming took place on Sunday 11 August 2013 at White Waltham Airfield, southwest of Maidenhead, England, for episode 4 of Series 16, "The Flying Club". </P> <P> In the Killings of Copenhagen episode, number five in the sixteenth series--the 100th episode in all--several scenes are filmed at location in central Copenhagen, like Rådhuspladsen ("the City Hall Square"), Nyhavn ("New Port") with its canal and old colourful houses, a Danish countryside church, and at the circular square inside the Copenhagen Police Headquarters building . The murder in Copenhagen is one of two within the entire series (until episode 114, at least) where a murder takes place outside the fictive County of Midsomer, the other being in Brighton where Inspector John Barnaby (Neil Dudgeon) is introduced . </P> <Table> Characters and the seasons where they appeared <Tr> <Th> Character </Th> <Th> Actor </Th> </Tr> <Tr> <Th> </Th> <Th> </Th> <Th> </Th> <Th> </Th> <Th> 5 </Th> <Th> 6 </Th> <Th> 7 </Th> <Th> 8 </Th> <Th> 9 </Th> <Th> 10 </Th> <Th> 11 </Th> <Th> 12 </Th> <Th> 13 </Th> <Th> 14 </Th> <Th> 15 </Th> <Th> 16 </Th> <Th> 17 </Th> <Th> 18 </Th> <Th> 19 </Th> </Tr> <Tr> <Td> DCI Tom Barnaby </Td> <Td> John Nettles </Td> <Td_colspan="13"> Main </Td> <Td_colspan="6"> </Td> </Tr> <Tr> <Td> DCI John Barnaby </Td> <Td> Neil Dudgeon </Td> <Td_colspan="12"> </Td> <Td> Recurring </Td> <Td_colspan="6"> Main </Td> </Tr> <Tr> <Td> DS Gavin Troy </Td> <Td> Daniel Casey </Td> <Td_colspan="7"> Main </Td> <Td_colspan="4"> </Td> <Td> Guest </Td> <Td_colspan="8"> </Td> </Tr> <Tr> <Td> DS Daniel Scott </Td> <Td> John Hopkins </Td> <Td_colspan="6"> </Td> <Td_colspan="2"> Main </Td> <Td_colspan="11"> </Td> </Tr> <Tr> <Td> DS Benjamin Jones </Td> <Td> Jason Hughes </Td> <Td_colspan="8"> </Td> <Td_colspan="7"> Main </Td> <Td_colspan="3"> </Td> <Td> Guest </Td> </Tr> <Tr> <Td> DS Charlie Nelson </Td> <Td> Gwilym Lee </Td> <Td_colspan="15"> </Td> <Td_colspan="3"> Main </Td> <Td_colspan="1"> </Td> </Tr> <Tr> <Td> DS Jamie Winter </Td> <Td> Nick Hendrix </Td> <Td_colspan="18"> </Td> <Td_colspan="1"> Main </Td> </Tr> <Tr> <Td> DC Gail Stephens </Td> <Td> Kirsty Dillon </Td> <Td_colspan="9"> </Td> <Td> Recurring </Td> <Td_colspan="3"> Main </Td> <Td_colspan="7"> </Td> </Tr> <Tr> <Td> Dr George Bullard </Td> <Td> Barry Jackson </Td> <Td_colspan="2"> Main </Td> <Td> </Td> <Td> Main </Td> <Td> Recurring </Td> <Td_colspan="9"> Main </Td> <Td_colspan="5"> </Td> </Tr> <Tr> <Td> Dr Dan Peterson </Td> <Td> Toby Jones </Td> <Td> </Td> <Td> Recurring </Td> <Td> Main </Td> <Td_colspan="16"> </Td> </Tr> <Tr> <Td> Dr Kate Wilding </Td> <Td> Tamzin Malleson </Td> <Td_colspan="13"> </Td> <Td> Recurring </Td> <Td_colspan="3"> Main </Td> <Td_colspan="2"> </Td> </Tr> <Tr> <Td> Dr Kam Karimore </Td> <Td> Manjinder Virk </Td> <Td_colspan="17"> </Td> <Td_colspan="2"> Main </Td> </Tr> <Tr> <Td> Joyce Barnaby </Td> <Td> Jane Wymark </Td> <Td_colspan="13"> Main </Td> <Td_colspan="6"> </Td> </Tr> <Tr> <Td> Sarah Barnaby </Td> <Td> Fiona Dolman </Td> <Td_colspan="13"> </Td> <Td_colspan="6"> Main </Td> </Tr> </Table> <Tr> <Th> Character </Th> <Th> Actor </Th> </Tr>

When does season 20 of midsomer murders begin