The beautiful misery of The Deep Blue Sea - Terence Davies' crushing adaptation of Terence Rattigan's 1952 play - is almost too much.
Here is Hester Collyer (Rachel Weisz), a woman who basically throws her life away for the man she loves, and who she knows doesn't love her back.
Married to a magistrate in the London of the early '50s, with the memory - and rubble - of the war still everywhere, Hester falls for Freddie Page (Tom Hiddleston), a high-strung charmer who frequents the pubs and can't stop yapping about his glory days in the RAF, fighting the "Jerries."
Hester and Freddie carry on a clandestine affair until, during a weekend visit to her mother-in-law's - a frightful and loathsome upper-cruster, played with frosty disdain by Barbara Jefford - Hester is found out. She's on the phone in the bedroom, back to the door, when her husband, Sir William (Simon Russell Beale), walks in and hears "I love you," spoken softly to someone else. You can see Sir William's heart sink, and you can see the resignation and resolve on Weisz's face - she will leave her older, wealthy, and caring spouse to live alone, waiting in a glum little rooming house for her lover to appear.