The powerful story of salesgirl Mary Hilton who, after being convicted of murder and sentenced to hang, spends her final weeks in a condemned cell remembering the events that led to her crime. She met and fell hopelessly in love with impoverished musician Jim Lancaster, and left her neglectful husband for him, only to find his attraction to her deflected by his involvement with rich socialite Lucy Carpenter. When Jim’s relationship with Lucy takes a tragic turn, Mary is heartbroken and snaps - transforming her love for him into a murderous hatred for her rival. Alone, imprisoned and desperately afraid; as each day the end grows closer and she attempts to settle matters with her family as she awaits her final sentencing, or a possible reprieve.