<Tr> <Td_colspan="6"> Joselyn, Mrs McCarthy' niece and god - daughter, visits and then disappears . A red feather leads Father Brown to a private gentlemen's club, The Crimson Feather . With Bunty's help Father Brown discovers Joselyn is at the club where she has been working for months . When one of the other girls, Verity, is murdered at the club wearing Joselyn's costume; Bunty goes undercover as Pepper Seymore, a burlesque dancer, and Mrs McCarthy as a cleaner take jobs at the club looking for clues . Father Brown uncovers a pregnant victim, jealously, unrequited love, blackmail and other services being offered within the club . </Td> </Tr> <Tr> <Th> 54 </Th> <Td> 9 </Td> <Td> "The Lepidopterist's Companion" </Td> <Td> Paul Gibson </Td> <Td> Kit Lambert </Td> <Td> 11 January 2017 (2017 - 01 - 11) </Td> </Tr> <Tr> <Td_colspan="6"> Mrs McCarthy looks after Kembleford's Mobile Library when the manager, Margaret Cartwright, is discovered injured in the library by her assistant Ada . Cartwright's husband, a photographer, accidentally kills his assistant, Lewis, boyfriend of Ada, with a cricket bat believing him a burglar . Lewis is found to have been poisoned and Father Brown discovers his cache of nude photographs of local girls . One of the photographs is of Ada . Inspector Mallory arrests the photographer while Father Brown wonders why a book, The Lepidopterist's Companion, is loaned out so often for only a day or two, and who used the photographer's studio where the pictures were taken . Mrs McCarthy walks out with a ne'er - do - well . </Td> </Tr> <Tr> <Th> 55 </Th> <Td> 10 </Td> <Td> "The Alchemist's Secret" </Td> <Td> Simon Gibney </Td> <Td> Rob Kinsman </Td> <Td> 12 January 2017 (2017 - 01 - 12) </Td> </Tr>

Where is father brown filmed in the cotswolds