Set in San Francisco, this tense crime drama follows a wealthy socialite who moves through a web of desire, money, and danger when her marriage collapses. Lois Frazer, Jane Wyatt, is in the middle of a divorce from her fortune-hunter husband Howard Frazer, Harlan Warde. After she discovers a gun he once bought, she uses it to shoot him in front of the man who has become her new partner, Lt. Ed Cullen, Lee J. Cobb, a seasoned homicide detective with the San Francisco police. The act triggers a chain of upheaval: Cullen takes charge of the case, disposes of the weapon, and quietly moves the body, while Lois faces the consequences of a crime that could upend everything she’s built with her new life.
Cullen is assigned to investigate, and he is not alone—his younger brother, Andy Cullen, John Dall, who is newly minted in the homicide division, postpones his honeymoon to stay on the case and help with the tricky investigation. The film follows their partnership as it evolves under pressure, with the murder weapon turning up again in an entirely separate killing—this time used by a young troublemaker named Nito Capa, Alan Wells. The young suspect’s involvement becomes a pressing clue, and Cullen hopes to pin both murders on him to salvage Lois and himself from exposure, all while the clock ticks and the evidence mounts.
As the investigation tightens, Andy becomes more suspicious of his brother’s possible involvement in the earlier murder. His persistence leads to a clash of loyalties and a series of evasions and lies that threaten to reveal the truth. The tension peaks as Cullen, driven by desperation, physically subdues Andy, ties him up, and makes a difficult call to Lois to urge them to flee together. With roadblocks sealing the city, the two are forced into a dangerous game of escape and pursuit, a test of nerves that plays out against the backdrop of a city under siege by its own police force.
The chase comes to a head at a location the siblings once played near—the abandoned ruins of Fort Point under the Golden Gate Bridge. It’s a scene that blends memory with danger as the plan to vanish together falters in the face of police scrutiny. Ultimately, the fugitives are arrested, and the courtroom becomes the final arena for truth and consequence. Outside the courtroom, Lois makes a last, guarded offer to her lawyer—an offer to do anything to avoid conviction—while Ed, wearing defeat more than anger, shares a cigarette with her and gives her a final, wary glance that lingers after the gavel falls.