Janet Suzman in "Ruth Rendell Mysteries" - Front Seat (1997) P.4/6

Ruth Rendell Mysteries / TV series / Front Seat / Original Air Date 21 February 1997.
Director Sandy Johnson.
WritersRuth Rendell (novel), Alex Ferguson (adaptation)

Back in her childhood hometown, Cecily Branksome finds that a park bench in her father's honor has been replaced by one placed there in memory of Rupert Moore, a reputed murderer. To get even, she decides to out the man's mistress, the woman he killed his wife for. It had all happened long ago and her husband begs her to drop the whole thing, but she insists on going on. Aided by an old friend, Arnold Cottle, her pursuit turns to obsession. Little does she know the true story of Rupert Moore and his lover. (Source IMDB)
Cast
Janet Suzman ... Cecily Branksome
Edward Hardwicke... Hugh Branksome
Joyce Redman... Mrs. Jones
Richard Johnson... Arnold Cottle
Danny Spring... Young Bartender
David Trevena... Man In Toilet
Edward Clayton... Landlord
David Huntington... Rupert
Griff Mellhuish... Ralph
Shari Hughes... Alice
Maxime Allan... Rose
Joanna Jeffrees... Ellen