Longtime alcoholic Don Birnam has been sober for ten days and appears to be over the worst... but his craving has just become more insidious. Evading a country weekend planned by his brother and girlfriend, he begins a four-day bender that just might be his last – one way or another.

Director Billy Wilder's unflinchingly honest look at the effects of alcoholism may have had some of its impact blunted by time, but it remains a powerful and remarkably prescient film.

'The Lost Weekend' is a groundbreaking film with a realistic portrayal of alcoholism. Ray Milland's performance as Don Birnam is praised for its depth. Billy Wilder's direction and the film's visual style, including deep focus and Miklós Rózsa's haunting score, effectively convey addiction's despair. However, some find it melodramatic and repetitive, with an unrealistic ending. Despite criticisms, it is regarded as powerful and influential in cinema.