Rose Loomis and her older, gloomier husband, George, are vacationing at a cabin in Niagara Falls, N.Y. The couple befriend Polly and Ray Cutler, who are honeymooning in the area. Polly begins to suspect that something is amiss between Rose and George, and her suspicions grow when she sees Rose in the arms of another man. While Ray initially thinks Polly is overreacting, things between George and Rose soon take a shockingly dark turn.
You can now watch Niagara online on the following streaming providers in the United States.
| Sound | Sol Kaplan | Original Music Composer |
| Editing | Barbara McLean | Editor |
| Directing | Henry Hathaway | Director |
| Writing | Walter Reisch | Writer |
| Production | Charles Brackett | Producer |
| Writing | Richard L. Breen | Writer |
| Writing | Charles Brackett | Writer |
| Camera | Joseph MacDonald | Director of Photography |
| Sound | Lionel Newman | Music Director |
| Art | Maurice Ransford | Art Direction |
| Costume & Make-Up | Ben Nye | Makeup Artist |
| Art | Stuart A. Reiss | Set Decoration |
| Art | Lyle R. Wheeler | Art Direction |
| Costume & Make-Up | Dorothy Jeakins | Costume Design |
| Sound | Edward B. Powell | Orchestrator |
| Sound | W. D. Flick | Sound |
| Sound | Roger Heman Sr. | Sound |
| Visual Effects | Ray Kellogg | Visual Effects |
| Directing | Rose Steinberg | Script Supervisor |
| Editing | Lyman Hallowell | Assistant Editor |
| Costume & Make-Up | Allan Snyder | Makeup Artist |
| Costume & Make-Up | Sam Benson | Costume Supervisor |
| Costume & Make-Up | Lynn F. Reynolds | Makeup Artist |
| Editing | Leonard Doss | Color Timer |
| Costume & Make-Up | Lillian Ugrin | Hairstylist |
| Crew | Polly Burson | Stunts |
| Costume & Make-Up | Charles LeMaire | Costume Design |
| Directing | Gerd Oswald | Director |
