Lora May Hollingsway, who grew up next to the wrong side of the tracks, married her boss who thinks she is just a gold digger. Rita Phipps makes as much money writing radio scripts at night as her school teacher husband does. Deborah Bishop looked great in a Navy uniform in WWII but fears she'll never be dressed just right for the Country Club set. These three wives are boarding a boat filled with children going on a picnic when a messenger on a bicycle hands them a letter addressed to all three from Addie who has just left town with one of their husbands. They won't know which one until that night.

Detective Mark McPherson investigates the killing of Laura, found dead on her apartment floor before the movie starts. McPherson builds a mental picture of the dead girl from the suspects whom he interviews. He is helped by the striking painting of the late lamented Laura hanging on her apartment wall. But who would have wanted to kill a girl with whom every man she met seemed to fall in love? To make matters worse, McPherson finds himself falling under her spell too. Then one night, halfway through his investigations, something seriously bizarre happens to make him re-think the whole case.

Northern lawyer John Reynolds travels to New Orleans to try and clean up the local crime syndicate based around a lottery...