Adapted from the play by Terence Rattigan, The Deep Blue Sea stars Vivien Leigh as the troubled wife of a London attorney (Emlyn Williams). Racked with emotional problems, Leigh turns her back on her loveless marriage and sets up house with a handsome RAF officer (Kenneth More). When her lover proves to be shallow and unreliable, Leigh attempts to kill herself. She is rescued by a gambler (Eric Portman), who'd once been a doctor before being drummed out of his profession in disgrace. The kindly ex-doctor builds up Leigh's confidence in herself, allowing her to go on with her life without relying upon men to define her self-image.
by Hal Erickson synopsis