Heartbreak House (1977)

Set during WWI, a young girl (Lesley Anne Down) along with her father (Richard Pearson) and her older businessman fiance (David Waller) are invited to the country estate of her eccentric friend (Sian Phillips). But things go awry when she discovers the man (Daniel Massey) she loves is her friend's husband! Based on the play by George Bernard Shaw and directed by Cedric Messina. I'm rather fond of this Shaw piece though I know others find it too "talky" but hey, it is Shaw after all and his strength (as with most playwrights) is in his dialog. The play could be construed as dated because the allegorical aspect showing how the British society were apathetic and seemed impervious to the changes in society that WWI would bring. Shaw wraps this all up in a Chekhovian (his own words, not mine) style. All the characters represent different aspects of British society from the aristocracy to the bourgeoisie to the lower classes. They're all aimless dreamers in their own way and unable to navigate their lives and it's clear that soon they will be extinct. It's wonderfully acted. Notably John Gielgud as the aged and dotty family patriarch. With Barbara Murray, Donald Pickering, Joyce Grant and Barry Jackson.