Double Indemnity

The film that defines noir. Barbara Stanwyck is outstanding as an amoral wife who wants out of her marriage and will use anyone to help her. Fred MacMurray at first refused to play her lover and accomplice, fearing it was too great a departure from his romantic comedy roles and would hurt his career; instead, it revealed a new side to his personality and made him an even bigger star. Edward G. Robinson is the perfect counterweight to the two plotters. Flashback narration has never worked better.