 Based on a true story, the movie was a thinly disguised account of  screenwriter Terence Rattigan (qv)s life friend  Vivien Leigh (qv) and her attempt to leave her husband  Laurence Olivier (qv) for Australian actor Peter Finch (qv).  Leigh and Finch made it to the London airport, but their plane was  delayed by incoming fog giving Olivier time to confront the two and  bring Leigh home. Leigh abandoned her plan after hours of fog delay.