Rose and George Loomis are vacationing in a bungalow at Niagara Falls. Their relationship is getting worse and worse. They met the Cuttlers, spending a late honeymoon in the next bungalow. By accident, Polly Cuttler discovers that Rose has a lover. But what she is not aware of is that Rose and her lover intend to attract George in the falls to murder him...
Marilyn Monroe ... Rose Loomis
Joseph Cotten ... George Loomis
Jean Peters ... Polly Cutler
Max Showalter ... Ray Cutler