Impulse

Impulse

Year: 1984

Runtime: 91 mins

Language: English

Director: Graham Baker

ThrillerMysteryHorror

When a minor earthquake rattles a quiet, isolated town, something unseen is triggered within its residents. The tremor releases the deep‑seated desires, urges and passions that each person has locked away, prompting bizarre, violent and self‑destructive acts. The community spirals into chaotic behavior as suppressed impulses explode.

Warning: spoilers below!

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Impulse (1984) – Full Plot Summary & Ending Explained

Read the complete plot breakdown of Impulse (1984), including all key story events, major twists, and the ending explained in detail. Discover what really happened—and what it all means.

Stuart, Tim Matheson, and his girlfriend Jennifer Russell, Meg Tilly, come to the town to visit her hospitalized mother. From the moment they arrive, a creeping unease settles over the place as several residents display increasingly odd behavior. While Stuart drinks the local milk, Jennifer abstains, and the day slowly spirals from curious oddities into something far more disturbing as the townspeople and Stuart begin to show signs of violence and extreme sexuality.

Jennifer visits her friend Margo, Amy Stryker, and discovers evidence that Margo’s son Jimmy has suffered a serious injury to his arm. When Jennifer tries to leave in her car, she finds her tires slashed by Jimmy and Shawn, trapping her in a cycle of escalating danger. If she escapes in Margo’s car, Jimmy and Shawn chase and trap her in the garage, setting it on fire. She barely makes it out alive as the fire closes in around her.

The town’s strain deepens as the local physician, Dr. Carr, Hume Cronyn, euthanizes Margaret and then takes his own life. The shock of these events ripples through the community and into Jennifer’s circle, especially when Stuart learns that Jennifer’s brother Eddie, Bill Paxton, harbors incestuous feelings for her and kills him, intensifying the sense that something has corrupted the town from within.

As chaos takes hold, Jennifer flees in a pickup, only to be stranded outside the town. Meanwhile, Stuart hides in the woods and uncovers a recently repaired toxic waste vault that leaks into a vat of milk, a discovery that ties the outbreak to a deliberate contamination. He follows the conduit back toward town, and fate puts him face to face with Jennifer in the stranded vehicle; he frees the truck and urges her to leave, explaining that she is the only uninfected person who can escape, even as he vows to return and help as best he can.

Two men are seen loading a biplane with barrels of liquid, and after the plane takes off, a government vehicle filled with radios reveals plans to spray the town. When Stuart confronts the man, the orderly exchange ends with him being shot. Jennifer, who had started back toward town, witnesses her boyfriend struck down, and she drives down the assailant, killing him in a desperate act of self-preservation.

The town sits in a grim tableau: roads and streets are littered with corpses, and a news report notes that government agencies have no explanation for the mass death that has befallen the town. Jennifer walks away as the sun sets, moving forward into an unsure future, the weight of the night still heavy on her shoulders.

Last Updated: October 09, 2025 at 14:47

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These stories often follow a straightforward path from order to chaos. Characters find themselves in a situation—a confined town, a building, an island—where an event triggers a loss of control. The narrative is a linear escalation of dread and violence, with characters navigating a landscape of imminent threat from those around them. The journey is less about solving a mystery and more about enduring a relentless onslaught of psychological and physical horror, typically ending with little to no hope.

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This thread connects films based on their shared visceral experience: a potent mix of high intensity, a tense tone, and a bleak outlook. They are united by a feeling of claustrophobic dread and a narrative that explores the fragility of the human psyche when pushed to its limits, resulting in a deeply unsettling viewing experience.

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Don't stop at just watching — explore Impulse in full detail. From the complete plot summary and scene-by-scene timeline to character breakdowns, thematic analysis, and a deep dive into the ending — every page helps you truly understand what Impulse is all about. Plus, discover what's next after the movie.

Impulse Timeline

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Impulse Timeline

Characters, Settings & Themes in Impulse

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Characters, Settings & Themes in Impulse

Impulse Spoiler-Free Summary

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More About Impulse

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