- Country: UK
- Genres: Crime, Drama, Mystery
- Release: 1990-09-16
- Director: Ross Devenish
- Writers: Agatha Christie , Clive Exton
- Language: English
- Stars: David Suchet , Hugh Fraser , Philip Jackson , Beatie Edney , David Rintoul , Gillian Barge , Michael Cronin , Joanna McCallum , Anthony Calf , Allie Byrne
- Runtime: 103 min
- Awards: N/A
- AKA: The Mysterious Affair at Styles (United Kingdom)
- Plot:
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.
- IMDB:tt0100216
Poirot Season 3 Cast
Ross Devenish
Director
David Suchet
Hercule Poirot
Hugh Fraser
Lieutenant Hastings
Philip Jackson
Chief Inspector Japp
Beatie Edney
Mary Cavendish
David Rintoul
John Cavendish
Gillian Barge
Mrs. Inglethorp
Michael Cronin
Alfred Inglethorp
Joanna McCallum
Evie Howard
Anthony Calf
Lawrence Cavendish
Allie Byrne
Cynthia Murdoch