Sorry, Wrong Number (1948)

Director: Anatole Litvak · Genre: Mystery, Thriller

blackmail

A bedridden heiress overhears a murder plot on a crossed telephone line and desperately tries to warn others before it is too late. As she makes frantic phone calls, she begins to suspect that she is the intended victim. The film is a tense noir thriller centered on isolation, paranoia, and escalating panic.

Narrative Score

Experimental 5-axis narrative score — not a critic rating.storyendingvisualactingexpect

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Full Plot & Ending Explained

Intro

Leona Stevenson, a wealthy but bedridden invalid, spends a lonely evening in her New York apartment trying to reach her husband Henry by phone, only to become trapped in a chain of crossed wires, missed connections, and alarming revelations. When she accidentally overhears two men planning a murder for that same night, the phone becomes her only means of trying to save an unknown victim while her own marriage and past begin to unravel.

Turning Point 1

Leona first calls Henry’s office and learns he is not there, then reaches his secretary who explains that Henry left after meeting a woman named Sally Lord. That name unsettles Leona, because Sally was once Sally Hunt, a college friend who had been in love with Henry before Leona married him.

Turning Point 2

As Leona continues phoning for help, she reaches the operator and the police, but neither takes her warning seriously enough to act quickly. The overheard conversation gives only a fragment of the plan: a murder is scheduled for 11:15 PM, and the victim will be isolated near a train line so that the passing train will cover the sound of screams.

Turning Point 3

With no one believing her, Leona keeps calling people connected to Henry and her own past. Through flashbacks, the film shows how she met Henry when he was poor and working in a drugstore, how she pursued and married him despite her father James Cotterell’s objections, and how that choice severed her from the happier, simpler life she once imagined.

Turning Point 4

Leona then learns from Henry’s secretary and other calls that Sally Lord is not just an old friend but a woman still tied to Henry’s present life. Sally’s side of the story reveals that Henry has been meeting with shadowy men, and that he has become involved in dangerous financial trouble and criminal dealings connected to blackmail.

Turning Point 5

The mystery sharpens when Leona hears more about Henry’s business collapse and realizes that the men she overheard were not speaking about some stranger at all. She begins to suspect that the intended victim may be someone close to her, and her desperation grows as every attempt to reach Henry or the authorities fails to produce immediate help.

Turning Point 6

Near the end of the night, the truth comes into focus: Henry has been deeply involved in the scheme, and the murder plot was arranged around Leona herself. The suspense turns from whether a stranger will be killed to whether Leona will survive long enough to understand that she has been the target all along.

Ending

At 11:15 PM, the murder is carried out in the apartment, and Leona realizes too late that the conspiracy has come home to her. Henry’s final desperate call reaches her only after it is fatal; he can do nothing but hear her dying scream before the killer calmly answers the phone and says, “Sorry, wrong number.”

Cross-checked against Wikipedia and other public film references. View on Letterboxd ↗ The Narrative Score above is an experimental 5-axis rating, not a critic score.