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Plot summary

Incubus (1982) Plot Summary & Timeline

Incubus (1982) movie poster

Incubus is a 1982 thriller and horror film directed by John Hough and John Cassavetes, running 1 hour 33 minutes. This page retells the whole story in 628 words (about 3 minutes to read) and covers 12 key events in order, 6 characters, where and when it is set and 3 themes. Looking for the cast, ratings and where to stream it? See the movie page for Incubus.

to read the plot summary
3 min
key events in the timeline
12
characters profiled
6
themes explained
3
Incubus (1982) movie poster
Released
Runtime
1h 33m
Directors
John Hough and John Cassavetes
Genres
Thriller, Horror
Original language
English
No spoilers

What Is Incubus About?

The premise of Incubus in 317 words, with nothing given away. The full story follows below.

In the quiet New England town of Galen, an unsettling hush hangs over mist‑kissed streets and weathered farmhouses. Beneath the ordinary rhythm of a close‑knit community, whispers of an ancient, indestructible demon called the Destroyer linger like a dark folklore that refuses to fade. The atmosphere is thick with dread, a blend of rustic charm and an ever‑present sense that something malevolent waits just beyond the edge of perception.

Tim Galen, a teenage boy, is suddenly thrust into the town’s shadows when vivid nightmares of tormented women begin to infiltrate his sleep. The dreams feel more than fleeting images; they pulse with a weight that drags him toward a truth he cannot ignore. Guiding him, his formidable grandmother Agatha offers stern warnings rooted in a family history of hunting the unseen, hinting that his lineage may hold the key to confronting whatever prowls in the darkness.

Sam Cordell, the town’s compassionate doctor, finds his steady world shaken as the bizarre visions echo real horrors surfacing throughout Galen. His teenage daughter Jenny is intimately connected to Tim, weaving a personal thread through the investigation. Alongside them, Hank Walden, the pragmatic sheriff, shoulders the responsibility of keeping order while confronting mysteries that defy ordinary law‑enforcement methods. The curious Laura Kincaid, a local reporter, adds a relentless drive for answers, digging into old records and taboo legends that suggest a cult has long been bound to the ancient evil.

Together these uneasy allies are pulled into a battle that blurs the line between dream and reality, folklore and fact. The film unfolds with a brooding, foreboding tone, inviting the audience to feel the creeping anxiety of a town where every shadow might conceal a doorway to the underworld. As their paths converge, the whispering threat of the Destroyer looms, promising a confrontation that will test the limits of courage, belief, and the fragile barriers that keep the night at bay.

Full plot

What Happens in Incubus?

The complete story of Incubus, from the first scene to the last, in 628 words (about 3 minutes). Spoilers throughout. Names in the text link to 9 cast member pages.

Spoilers ahead

Mandy Pullman and Roy Seeley drift through a quiet Wisconsin lake at dusk, then spend the night camping on the shore. Their peaceful retreat is shattered when an unseen figure attacks them: Roy is killed and Mandy endures a brutal rape. The assault leaves Mandy severely injured, with a ruptured uterus and deep trauma, and she is rushed to the local hospital where Dr. Sam Cordell works to keep her alive. As the horror unfolds, the town’s uneasy mood deepens: in a separate thread, teenager Tim Galen is haunted by a recurring nightmare in which a woman is tormented by a monstrous figure, while his formidable grandmother Agatha Galen tries to steer him away from following the eerie dream’s pull.

At the hospital, Sam faces another layer of worry as the small community’s forces collide. Jenny Cordell, Sam’s teenage daughter, is dating Tim, a detail that adds personal tension to the investigation. Sheriff Hank Walden questions Sam about Mandy’s injuries, and a nosy local reporter, Laura Kincaid, shows up to push for answers, only to be told to back off. That night, the town’s library and museum becomes a crime scene when librarian Carolyn Davies is brutally raped and murdered just after closing. An autopsy reveals wounds eerily similar to Mandy’s, and the investigators uncover an unusually large amount of semen, a clue that ties the cases together in unsettling ways.

The investigation heats up as Sam and Laura press on. They discover that the semen from Davies does not match any known suspect, sending them toward a more puzzling explanation. Sam shares photographs of his deceased second wife and notes a startling resemblance to Mandy, deepening the sense that a shared history or a shared threat links the victims. As they dig deeper, they encounter accounts of a shapeshifting incubus—an entity said to enter the world through dreams and to take human form to prey on the living. Agatha Galen adds a grandmother’s cautionary voice, suggesting a long history of witch-hunter bloodlines in the Galen family and hinting that Tim’s dreams might be more than mere nightmares.

When Ernie Barnes and his two daughters are murdered at their farmhouse the following day, the fear in the town intensifies. Tim, still haunted by visions, seeks distraction at a local cinema, only to witness another brutal crime: a young woman is raped and killed in the downstairs bathroom, the stall door bent beyond repair as a gruesome sign of the violence. Hank Walden and Sam arrive at the latest crime scene, while Laura offers a possible historical angle—Satanic records that echo through the town’s past—suggesting a long-running thread of ritual crimes.

Late that night, the group gathers again at a tense crossroads. Laura reads from an old volume detailing the incubus, a shapeshifter that can manifest in human form and manifest through dreams. Agatha reveals more about Tim’s mother, who died before his birth and was blamed for witchcraft due to her psychic powers, reinforcing the idea that the Galen family bears a legacy of hunting supernatural threats. The night deepens the mystery as Tim confronts the meaning behind his dreams and the town’s buried legends.

In the climactic finale, Sam attempts to coax Tim into another dream to prove the connection between visions and the murders. Tim succumbs to a trance and races toward Jenny’s room, wielding a dagger given by Agatha. Sam intervenes, but the struggle ends with Tim’s death. The confrontation takes a darker turn when Laura’s face briefly shifts into that of the incubus, revealing that the predator has been hiding in female form all along. As Laura embraces Sam, he looks over her shoulder and discovers Jenny’s lifeless body lying on the bed, a shocking reminder that the nightmare has become all too real.

Timeline

Incubus Timeline: Every Key Event in Order

12 key events in the order they happen, from “Mandy and Roy's Lake Night Attack” to “Final Confrontation and Shocking Reveal”. 12 events name a place, across 11 locations.

  1. 1

    Mandy and Roy's Lake Night Attack

    Mandy Pullman and her boyfriend Roy swim at a lake in a rock quarry in rural Wisconsin. They end up spending the night camping when an unseen figure attacks them; Roy is killed and Mandy is raped. The violence and fear set the tone for a town already on edge.

    When:Night Where:Rock quarry lake, rural Wisconsin

  2. 2

    Mandy Hospitalized and Treated

    Mandy is rushed to Galen Hospital with a ruptured uterus and serious trauma from the attack. Dr. Sam Cordell begins life-saving treatment as the community grapples with the crime. Her injuries foreshadow a pattern the town will struggle to understand.

    When:Following morning Where:Galen Hospital

  3. 3

    Tim's Nightmares and Agatha's Warnings

    Tim Galen experiences a recurring nightmare in which a woman is tortured by a monstrous figure. His grandmother Agatha tries to dissuade him from voicing his suspicions about the premonitions, hinting at a family legacy. The dreams plant a link between Tim and the town's terror.

    When:Night Where:Tim's home

  4. 4

    Hospital Interrogation and Media Presence

    At the hospital, Sheriff Hank Walden questions Sam about Mandy's injuries while Laura Kincaid, a local reporter, arrives to cover the case. Walden forces her to leave, signaling friction between law enforcement and the press. The encounter introduces the idea that information will travel quickly and with consequences.

    When:Same night Where:Galen Hospital

  5. 5

    Library Murder and Autopsy Clues

    That night, librarian Carolyn Davies is raped and murdered at the library and museum. During her autopsy, Sam notes injuries similar to Mandy's and finds an unusually large amount of semen in her vagina. The discoveries widen the scope of the investigation into a possible ritual or supernatural cause.

    When:Night Where:Library and museum

  6. 6

    Detective Work and Family Clues

    Sam shows Laura pictures of his deceased second wife and notes the uncanny resemblance to Mandy. He also takes a sample of Tim's semen to compare, hoping for a genetic link, though the results do not yet settle the question. The investigation threads new leads while fear continues to spread.

    When:Day after Where:Hospital

  7. 7

    Farmhouse Slayings and Theaters Tragedy

    The following day, Ernie Barnes and his two daughters are brutally slain at their farmhouse, escalating the town's fear. That night, a young woman is raped and murdered in the downstairs bathroom of a local cinema, with the metal stall door nearly bent in half. The spree reinforces a pattern of violent, ritualized crimes.

    When:Day and night Where:Farmhouse; Local cinema

  8. 8

    Evidence and Historical Hints of Satanism

    Sheriff Walden and Sam arrive at the crime scenes ahead of Laura, who says she might help with the investigation. Laura reveals she has uncovered historical records detailing Satanism and similar crimes throughout the town's past. The past and present crimes begin to feel connected.

    When:Night Where:Various crime scenes; library

  9. 9

    Tim's Confrontation with Jenny

    Tim confronts Jenny at her home, hysterical, insisting his dreams are connected to the murders. He pleads with her, revealing how the visions guide his fear and paranoia. The moment shows how close innocence sits to danger in Tim's mind.

    When:Evening Where:Jenny's home

  10. 10

    DNA Clash and Incubus Hint

    Sam obtains a sample of Tim's semen for comparison with the victims, but it does not match Mandy's attacker. The mismatch rules out Tim as the killer and pushes the investigation toward a non-human agent. The DNA twist deepens the mystery.

    When:Night Where:Hospital lab

  11. 11

    Library Assembly and Incubus Revelation

    Tim, Agatha, Sam, Jenny, and Laura gather at the library where Laura reads a passage about the incubus, a shapeshifter that manifests through dreams. Agatha explains Tim's family’s historical role as witch hunters and implies his dreams are rooted in a psychic legacy. The incubus concept gains credibility as a central threat.

    When:Night Where:Library

  12. 12

    Final Confrontation and Shocking Reveal

    Laura and Tim return with Sam and Jenny to their home; Tim experiences a seizure-like state as Sam attempts to induce his dream to prove the connection. Tim lunges at Laura with a dagger given by Agatha, and Sam intervenes by stabbing him to death. Laura's face briefly shifts into the monstrous incubus, revealing she has been the shapeshifter all along. As Sam consoles Laura, he glimpses Jenny's dead body lying on her bed, blood pouring from between her legs.

    When:That night Where:Tim's/Jenny's home; Laura's home

Characters

Who Are the Main Characters in Incubus?

6 characters, among them Dr. Sam Cordell (John Cassavetes), Laura Kincaid (Kerrie Keane) and Tim Galen (Duncan McIntosh): who each one is and the part they play in the story. Every profile links to the actor’s page.

  • John Cassavetes as Dr. Sam Cordell (John Cassavetes) in Incubus

    Dr. Sam Cordell (John Cassavetes)

    Played by John Cassavetes

    A surgeon in the small town who treats Mandy and investigates the bizarre chain of crimes, while grappling with the past—his deceased second wife bears a striking resemblance to the killer. He is pragmatic and protective, yet drawn into the town’s occult history as the case deepens. His decisions drive the investigation, and his ethics are tested when the incubus reveals itself.

    • 👨‍⚕️ Doctor
    • 🔎 Investigator
    • 🧭 Rational
  • LK

    Laura Kincaid (Kerrie Keane)

    Played by Kerrie Keane

    A nosy local reporter who pushes the investigation and ultimately embodies the incubus in female form. Her determined, skeptical nature makes her a dangerous rival to traditional authority as she crosses lines in pursuit of the truth. The final reveal shows Laura as the shapeshifting predator, with Jenny’s death underscoring the cost of her deception.

    • 🗞️ Reporter
    • 🌀 Deceptive
    • 🗡️ Predator
  • TG

    Tim Galen (Duncan McIntosh)

    Played by Duncan McIntosh

    A teenage boy plagued by nightmare visions that echo the crimes, pulling him into the center of the mystery. His fear and sensitivity illuminate the vulnerable side of a community faced with inexplicable violence. Tim’s arc explores how premonitions can both implicate and endanger those around him.

    • 👦 Teen
    • 💭 Dreamer
    • 🛡️ Survivor
  • JC

    Jenny Cordell (Erin Noble)

    Played by Erin Noble

    Dr. Sam’s daughter who dates Tim, becoming a target and a symbol of innocence caught in a violent conspiracy. Her relationship with Tim anchors the emotional stakes of the story and the tragedy of the finale.

    • 👧 Daughter
    • 💞 Love interest
    • 🧭 Central figure
  • John Ireland as Hank Walden (John Ireland) in Incubus

    Hank Walden (John Ireland)

    Played by John Ireland

    The town sheriff coordinating the investigation and confronting an escalating pattern of crimes. He embodies local authority and the tension between skepticism and belief when faced with seemingly supernatural threats.

    • 🧭 Sheriff
    • 🕵️ Law
    • 🗂️ Authority
  • AG

    Agatha Galen (Helen Hughes)

    Played by Helen Hughes

    Tim’s grandmother who asserts the town’s occult history and frames Tim’s dreams as a familial legacy of witch hunters. She acts as a conduit for ancestral fear, guiding the investigation toward supernatural explanations.

    • 🧙‍♀️ Elder
    • 🕰️ History keeper
    • 🧩 Clue-giver
Setting

Where and When Is Incubus Set?

Incubus is set in Galen, Wisconsin and Lake Rock Quarry. Here is why the place matters to the story.

Where

Galen, Wisconsin, Lake Rock Quarry

The action centers on a rural Wisconsin town built around a lake and a nearby rock quarry. The area features local institutions like a hospital, library, and theater that become crime scenes and gathering spots for the residents. The landscape—quarries, farms, and the lake—provides a quiet backdrop for a predator operating beneath the surface of ordinary life.

  • ❄️ Rural setting
  • 🌊 Lake community
  • 🏘️ Small-town
Themes

What Are the Themes of Incubus?

3 ideas the story keeps returning to, among them Dreams and Reality, Witchcraft and Legacy and Violence and Vulnerability.

  1. 01

    Dreams and Reality

    Nightmares and premonitions drive the plot, with Tim’s disturbing visions mirroring the town’s murders. The incubus seems to enter the waking world through dreams, making it difficult for characters to separate fear from fact. The narrative uses sleep as a conduit for violence, suggesting inner demons can manifest as external threats.

  2. 02

    Witchcraft and Legacy

    Agatha links the killings to a historic pattern of witchcraft and witch hunter lineage in the Galen family, framing the crimes as a long-standing secret. The town’s past reverberates in the present, shaping how characters interpret danger and destiny. The story treats occult beliefs as social forces that shape behavior and fear.

  3. 03

    Violence and Vulnerability

    Mandy is attacked and others are murdered, exposing the community’s susceptibility to a predatory force. The film foregrounds sexual violence as a catalyst that destabilizes families and institutions. The predator uses intimate knowledge of victims to manipulate and terrify, culminating in a shocking revelation.

Tone & mood

What Kind of Film Is Incubus?

Dark in tone, with steady pacing and a moderate story, going by the plot summary.

Tone
Dark
Pacing
Steady
Story
Moderate
Intensity
High
Ending
Bleak

A steadily escalating and oppressive horror film that builds a suffocating atmosphere of dread as a small town is terrorized by a series of brutal, seemingly supernatural crimes.

  • tense
  • oppressive
  • anxious
  • horrifying
  • dread-filled
  • claustrophobic
  • supernatural horror
  • crime investigation
  • psychic visions
  • ancient cult

Content notes: sexual assault, rape, graphic murder, incest overtones, supernatural violence.

Quiz

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Where to watch

Where to Watch Incubus

Stream it on Fawesome and IndieFlix, or rent or buy it from Apple TV Store and Google Play Movies. US availability and prices from JustWatch.

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FAQ

Incubus Plot Questions

5 quick answers about Incubus, taken from the plot summary, character guide and setting on this page and the film’s credits.

What is Incubus about?

In the quiet New England town of Galen, an unsettling hush hangs over mist‑kissed streets and weathered farmhouses. Beneath the ordinary rhythm of a close‑knit community, whispers of an ancient, indestructible demon called the Destroyer linger like a dark folklore that refuses to fade.

Read the full plot summary

When and where does Incubus take place?

Incubus is set in Galen, Wisconsin and Lake Rock Quarry. The action centers on a rural Wisconsin town built around a lake and a nearby rock quarry. The area features local institutions like a hospital, library, and theater that become crime scenes and gathering spots for the…

The setting explained

Who are the main characters in Incubus?

The story follows Dr. Sam Cordell (John Cassavetes) (played by John Cassavetes), Laura Kincaid (Kerrie Keane) (played by Kerrie Keane), Tim Galen (Duncan McIntosh) (played by Duncan McIntosh) and Jenny Cordell (Erin Noble) (played by Erin Noble); the character guide covers 6 characters in all.

All the characters

What are the main themes of Incubus?

The summary picks out 3 themes: Dreams and Reality, Witchcraft and Legacy and Violence and Vulnerability.

The themes explained

Who directed Incubus?

Incubus (1982) was directed by John Hough, John Cassavetes and Matt Birman and runs 1 hour 33 minutes.

John Hough’s films

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