Niagara

Ray and his wife Polly arrive at the stunning Niagara Falls for what should be their honeymoon. However, they are surprised to find their reserved cabin at the Rainbow Cabins occupied by another couple, George and Rose.

After a brief discussion, Rose convinces Polly and the cabin manager Mr. Qua to allow them to stay, citing George's illness. The Cutlers reluctantly agree to accept a less desirable cabin, setting the stage for their intertwined fates.

Ray is on a business trip celebrating his recent professional achievement in the shredded wheat crisps industry. Meanwhile, George is eager to speak with the head of the Niagara factory, Mr. Kettering, but discovers he is unavailable.

As Ray and Polly get to know George and Rose, it becomes evident that their relationship is fraught with tension. George's jealousy and irritability clash with Rose's youthful beauty, hinting at underlying issues in their marriage.

During a tour of the falls, Polly witnesses Rose sharing a passionate kiss with a man named Patrick. This startling revelation raises suspicions about the nature of George and Rose's relationship, and the complicated dynamics unfold.

That night, George's emotions boil over when he suspects Rose is unfaithful. His rage culminates in a violent outburst, shattering a record during a fit of anger, showcasing the depth of his turmoil and distress.

Unbeknownst to George, Rose conspires to murder him with Patrick's help. She manipulates George into following her, setting the stage for tragedy in the shadows of Niagara's dark tourist tunnel.

In an unexpected turn of events, George finds himself in a life-or-death struggle with Patrick and ends up killing him in self-defense. He cleverly conceals the truth by switching shoes with Patrick, creating a web of deception.

Rose, fearing George's disappearance, contacts the police, prompting Inspector Starkey to investigate what has transpired. The unfolding drama sees Rose tortured by uncertainty about her husband's fate.

When a body is recovered, Rose is devastated to discover it's Patrick, not George. This shocking misidentification leads to her eventual emotional breakdown and hospitalization, illustrating the depths of her betrayal and loss.

In the midst of chaos, Mr. Kettering visits the cabins for a meeting with Ray, which prompts the relocation of the Cutlers. This move further complicates the already tense situation unfolding between George and Rose.

On his quest for revenge, George encounters Polly instead of Rose, leading to a charged emotional exchange. Polly begins to suspect that George has survived and she communicates her uneasy feelings to the authorities.

George confronts Rose in a dramatic showdown at the Carillon bell tower. In a moment of rage and despair, he tragically strangles her, wrapping the story in a shroud of heart-wrenching fate.

In a desperate act, George kidnaps Polly while chaos unfolds around them. This leads to a chaotic chase that sees George's ultimate sacrifice as he plunges over the Falls, leaving a haunting impression of love turned deadly.

The film concludes with the heart-wrenching image of Rose's lifeless body wearing a striking red dress at the base of the Falls while Polly is rescued. This poignant finale encapsulates the tragic consequences of betrayal and desperation amidst the beauty of Niagara Falls.