ON LOCATION WITH POIROT! The annex on the right was used as Styles St. Mary Post Office Hastings renews his friendship with Poirot and involves him in the mysterious poisoning of the mistress of a manor house married to a man twenty years her junior. Poirot's Cottage. The Mysterious Affair at Styles (1990 film) From Wikimedia Commons, the free media repository. Chavenage House, Tetbury, Gloucestershire, England, UK 8 of 8 found this interesting Interesting? Edit. With David Suchet, Hugh Fraser, Philip Jackson, Beatie Edney. Episode-by-episode: The Mysterious Affair at Styles Between Series Two and Series Three, the production team decided to tackle Christie's first ever Poirot novel, The Mysterious Affair at Styles, published in 1920, to coincide with the centenary of her birth in September 1990. THE MYSTERIOUS AFFAIR AT STYLES (2). This building was used as a pub. The Mysterious Affair at Styles (1990) Filming & Production. Chavenage House, near Tetbury, Gloucestershire used as Styles Court. ON LOCATION WITH POIROT! Yes No. THE MYSTERIOUS AFFAIR AT STYLES (3) EASTON GREY, GLOUCESTERSHIRE. An impression of the "Agatha Christie's Poirot" episode using the real filming locations (except for the WWI scene and the house of cards). PHOTOS - COPYRIGHT JOAN STREET . BACK TO POIROT LOCATION INDEX Directed by Ross Devenish. In a lovely fiction twist, Agatha Christie and her first husband Archie called their house Styles after The Mysterious Affair at Styles. Showing all 5 items Jump to: Filming Locations (4) Production Dates (1) Filming Locations. Jump to navigation Jump to search. Ypres, June 1917