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Plot summary

Coma (1978) Plot Summary & Timeline

Coma (1978) movie poster

Coma is a 1978 drama and mystery film directed by Michael Crichton, running 1 hour 53 minutes. This page retells the whole story in 605 words (about 3 minutes to read) and covers 12 key events in order, 4 characters, where and when it is set and 4 themes. Looking for the cast, ratings and where to stream it? See the movie page for Coma.

to read the plot summary
3 min
key events in the timeline
12
characters profiled
4
themes explained
4
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Coma (1978) movie poster
Released
Runtime
1h 53m
Director
Michael Crichton
Original language
French
No spoilers

What Is Coma About?

The premise of Coma in 291 words, with nothing given away. The full story follows below.

In a stark, dimly lit bedroom that feels both sanctuary and prison, a solitary teenager discovers an uncanny talent: she can shape her dreams with vivid clarity, turning the subconscious into a playground she can explore at will. Confined to this small, personal universe, she turns to the endless scroll of online platforms, hoping to find a thread of connection that reaches beyond the four walls that have become her world. The digital haze of social media and livestreams mirrors the fluid, sometimes disorienting nature of her nocturnal wanderings, setting a tone that is equal parts intimate and unsettling.

The film drifts between the ordinary rhythm of school life and the surreal, hyper‑real quality of the teen’s dreamscape, each transition subtly blurred as if the two realms are competing for dominance. A muted color palette punctuated by sudden bursts of neon light reflects the uneasy balance between the safe familiarity of daylight and the intoxicating, almost dangerous allure of the night’s inner theater. The atmosphere hums with a quiet tension, suggesting that every click, every whispered confession online could be a doorway to something far deeper than a simple chatroom.

When she encounters a mysterious YouTuber known only as Patricia Coma, the teen’s search for meaning takes an unexpected turn. Patricia offers guidance that feels both comforting and cryptic, inviting her to follow a path that promises answers while simultaneously drawing her deeper into the hazy border where waking life and nightmare intertwine. As the teenager leans into this newfound mentorship, the story hints at a growing uncertainty: the more she learns, the more she question what is real, what is dreamed, and whether the digital veil can ever truly protect her from the shadows that linger just beyond the screen.

Full plot

What Happens in Coma?

The complete story of Coma, from the first scene to the last, in 605 words (about 3 minutes). Spoilers throughout. Names in the text link to 2 cast member pages.

Spoilers ahead

Dr. Susan Wheeler, a surgical resident at Boston Memorial Hospital, is devastated when her friend, Nancy Greenly, a young healthy woman, is left brain dead after a routine procedure there. Her suspicions are piqued when, shortly after, another young, otherwise healthy patient also slips into a coma during knee surgery.

Susan dives into the hospital’s records and uncovers a troubling pattern: over the last year, a surprising number of fit, young patients have suffered the same fate, and all of the affected procedures happened in operating room #8. What’s more, each patient had a tissue-type sample taken before being transferred to the Jefferson Institute, a distant care facility.

Her physician boyfriend, Mark Bellows, believes the coincidences may be innocent, but Susan’s questions rattle the hospital’s inner circle. She offends the Chief of Anesthesiology, Dr. George Harris, by requesting access to the relevant patient charts, and her insistence on digging deeper leads to increasing isolation. As pressure from superiors and colleagues mounts, she also begins to doubt the trustworthiness of Mark.

A grim turn comes when Susan visits the hospital morgue, where Nancy’s postmortem is underway. She questions the pathologists about how someone could be put into a coma without detection, and one of them suggests carbon monoxide poisoning as a possibility.

The tension at the top floors intensifies. Dr. Harris, the chief of surgery, scolds Susan for her recent behavior and warns that she could be dismissed unless she agrees to see a psychiatrist. He’s not entirely unsympathetic, though, giving her a weekend away to recover from her grief and stress. Susan and Mark escape to the seaside for a recharge, but the trip is cut short when a highway sign points to the Jefferson Institute, and the urge to uncover the truth becomes irresistible.

Back at the hospital, Kelly, a maintenance worker who had warned Susan that something was wrong, is fatally electrocuted by an unseen assailant. From Kelly’s tip, Susan investigates the basement and discovers a tank whose line runs through the ventilation system into OR #8, controlled by a radio signal. The killer who has been stalking Susan targets her again; one late-night confrontation ends with Susan trapping him in the anatomy lab’s cadaver cooler.

Believing the Jefferson Institute is an innocent cover for a compassionate, cutting-edge facility, Susan joins the institute’s tour of an apparent high-tech, low-cost care option for coma patients. But the truth soon surfaces: the institute is a front for an international organ black market, where patients’ organs are harvested and sold to the highest bidder. Security footage captures Susan’s escape as she rides away on top of an ambulance, the facility’s underground network of harvested organs slipping into international shipping to the airport.

Armed with this knowledge, Susan hurries to Dr. Harris for confirmation. He offers her a drink, and she quickly loses control, experiencing intense abdominal pain that resembles appendicitis. It becomes clear she has been drugged, and she is rushed into surgery to have an appendectomy. As she lies prepped, the staff inform Dr. Harris that OR #7 is ready, but he insists on using OR #8, drawing Mark’s suspicion and prompting him to act. He finds the gas line feeding the anesthesia system, destroys it, and forges a path to safety as Susan gasps back to consciousness after the operation.

In the end, the plan unravels: the evidence, the attempted coercion, and Mark’s decisive intervention culminate in Dr. Harris’s arrest, with the two police officers waiting outside after Susan’s harrowing ordeal. The movie closes on a note of relief tempered by the chilling reminder that greed can hide behind the veneer of clinical care.

Timeline

Coma Timeline: Every Key Event in Order

12 key events in the order they happen, from “Nancy Greenly's brain death after a routine procedure” to “Gas line sabotage and arrest of the mastermind”. 12 events name a place, across 10 locations.

  1. 1

    Nancy Greenly's brain death after a routine procedure

    Nancy Greenly, a healthy young woman, suffers brain death after a routine procedure at Boston Memorial Hospital. Dr. Susan Wheeler is devastated and begins to question whether something went wrong in the hospital. Nancy's death triggers Susan to look for patterns that might indicate a larger problem.

    Where:Boston Memorial Hospital

  2. 2

    Pattern of brain-dead patients linked to OR 8

    Susan discovers that over the past year, multiple fit, young patients have fallen comatose after surgery. All of these surgeries took place in operating room #8 and included a tissue-type sample before transfer to the Jefferson Institute. She begins to suspect a deliberate mechanism rather than coincidence.

    When:Over the past year Where:Operating Room #8, Boston Memorial Hospital

  3. 3

    Confrontation with Dr. George over patient charts

    She requests access to relevant patient charts and confronts the Chief of Anesthesiology, Dr. George. The confrontation offends him and he warns her about her standing at the hospital. The clash contributes to Susan's growing isolation and mounting pressure from superiors.

    Where:Boston Memorial Hospital

  4. 4

    Morgue discussion hints at carbon monoxide poisoning

    At the hospital morgue, Susan asks pathologists about how someone could deliberately cause a coma without detection. One pathologist mentions carbon monoxide poisoning as a possibility. The idea plants a lead that someone could be poisoning patients through the anesthesia system.

    Where:Hospital morgue

  5. 5

    Weekend off as Dr. Harris cools tensions

    Dr. Harris chastises Susan for her behavior and insists she speak with a psychiatrist as a condition of staying on staff. He is sympathetic enough to grant her a weekend off to cope with grief and stress. The mounting pressure pushes Susan toward stepping back from the case for now.

    When:Weekend Where:Boston Memorial Hospital

  6. 6

    Seaside weekend; sign to the Jefferson Institute

    Susan and Mark spend a quiet weekend by the seaside to decompress. On the drive back, Susan spots a highway sign for the Jefferson Institute and decides to investigate. Mark waits in the car while she goes inside the austere facility.

    When:Weekend Where:Seaside town; Jefferson Institute entrance

  7. 7

    Kelly the maintenance worker is killed; Susan discovers the CO line

    That night, Kelly, a hospital maintenance worker who tipped Susan to the truth, is fatally electrocuted by an unknown assailant. Susan follows the trail to the hospital basement and discovers a tank with a line that runs through the ventilation system to OR 8. The line shows that carbon monoxide is being pumped into anesthesia equipment to render patients brain-dead.

    When:Night Where:Hospital basement; OR8

  8. 8

    Stalker attack; trap him in the cadaver cooler

    The man stalking Susan closes in at the hospital and makes an attempt to attack her. After a brief struggle, she escapes and traps him in the anatomy lab cadaver cooler. This close encounter confirms a targeted threat behind the hospital's operations.

    When:Late night Where:Anatomy lab cadaver cooler, Boston Memorial Hospital

  9. 9

    Jefferson Institute tour reveals organ black market

    Susan decides to join the restricted tour at Jefferson Institute, under the impression it is a legitimate advanced care facility. She quickly discovers that Jefferson Institute is a cover for an international organ black market. Her discovery sets off a dangerous effort to expose the scheme.

    When:During tour Where:Jefferson Institute

  10. 10

    Ambulance escape with harvested organs

    Susan escapes atop an ambulance as it leaves the Jefferson Institute compound, transporting harvested organs toward the airport. She races to expose the crime and reach authorities. The escape heightens the stakes as the operation tries to stay under the radar.

    When:Night Where:From Jefferson Institute to airport

  11. 11

    Drugged by Dr George Harris; discovers true mastermind

    Believing Dr. George to be the operation's mastermind, Susan goes to Dr. Harris for answers. He offers her a drink and she quickly becomes incapacitated, experiencing abdominal pain that mimics appendicitis. She realizes that Dr. George is actually Dr. George Harris.

    When:Just before surgery Where:Hospital; pre-operative area

  12. 12

    Gas line sabotage and arrest of the mastermind

    As Susan is prepped for surgery, Mark notices the gas line in OR 8 and destroys it to foil the plan. Susan awakens after surgery, and two police officers summoned by Mark are waiting outside to arrest Dr. Harris. The mastermind is finally brought to justice.

    When:During surgery/aftermath Where:OR 8 and hospital exterior

Characters

Who Are the Main Characters in Coma?

4 characters, among them Dr. Susan Wheeler, Dr. George Harris and Mark Bellows: who each one is and the part they play in the story.

  • DS

    Dr. Susan Wheeler

    An ambitious surgical resident who relentlessly questions suspicious deaths and unusual coma patterns. She is principled, resourceful, and increasingly isolated as she digs deeper. Her determination and courage drive the investigation, even at personal risk.

    • 🩺 Determined
    • 🔎 Curious
    • 💪 Courageous
  • DG

    Dr. George Harris

    Chief of Surgery who appears reputable but is revealed as the mastermind behind the coma-inducing scheme. He uses charm and authority to manipulate staff and mask his illegal operation. His ruthlessness is contrasted with his professional facade, making him a dangerous antagonist.

    • 💼 Charismatic
    • 🕵️ Deceptive
    • ⚖️ Ruthless
  • MB

    Mark Bellows

    Susan's physician boyfriend who is supportive yet increasingly cautious about the hospital's secrets. He provides emotional support and helps expose the conspiracy, reinforcing the theme of trust under pressure. His loyalty is tested as the danger escalates.

    • 💬 Supportive
    • 🧭 Skeptical
    • 🏥 Medical
  • NG

    Nancy Greenly

    Healthy young woman whose coma and death trigger the investigation. Her tragic outcome reveals the human cost of the hospital's secrets. Her case motivates Susan to pursue the truth despite personal risk.

    • 😢 Tragic
    • 🩸 Victim
    • 🕊️ Innocent
Setting

Where and When Is Coma Set?

Coma is set in Boston Memorial Hospital and Jefferson Institute (late 1970s). Here is why the time and place matter to the story.

When

late 1970s

Set in a contemporary late-1970s urban hospital, the story reflects the era's medical technology and hierarchical culture. Procedures and investigations unfold amid a climate of suspicion and routine procedures that could hide dangerous secrets. The period's aesthetic—clinical interiors, strict codes, and escalating pressure—amplifies the tension.

Where

Boston Memorial Hospital, Jefferson Institute

Boston Memorial Hospital provides the central setting with tense surgical wards and high-stakes operating rooms. The Jefferson Institute appears as a sterile, distant care facility that hides a dark organ-trafficking operation. Hidden basements, an anatomy lab, and a covert transport network create a claustrophobic backdrop for the drama.

  • 🏥 Hospital
  • 🔬 Medical Research
  • 🚧 Restricted Facility
Themes

What Are the Themes of Coma?

4 ideas the story keeps returning to, among them Medical Ethics, Investigation and Power and Corruption.

  1. 01

    Medical Ethics

    The film centers on the tension between patient welfare and lucrative medical practices. It shows how routine surgeries can be manipulated to harvest organs, exposing a systemic breach of consent and care. Susan's quest to uncover the truth highlights the vulnerability of patients in a profit-driven environment. The story warns about ethical boundaries when power and money blur professional duties.

  2. 02

    Investigation

    An ordinary physician's routine becomes a web of clues as Susan traces suspicious patterns in patient outcomes and hospital processes. The search leads her through restricted zones, hidden facilities, and a dangerous conspiracy. The suspense hinges on careful observation, deduction, and the courage to challenge authority. It celebrates the patient advocate archetype in a medical thriller.

  3. 03

    Power and Corruption

    Behind the hospital's polished veneer hides a hierarchy that enables exploitation. Dr. Harris leverages authority, secrecy, and procedural control to conceal the organ trade. The film exposes how institutional power can be corrupted by greed. Authority becomes a weapon in a system designed to protect profits.

  4. 04

    Organ Trafficking

    The central plot reveals a covert international organ trade disguised as a low-cost care program. Donated organs move through a shadowy network from hospital to courier to the airport. The thriller uses medical environments to critique a global market that commodifies human body parts. The revelation rejects the assumption that medical care is purely benevolent.

Tone & mood

What Kind of Film Is Coma?

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

Tone
Tense
Pacing
Steady
Story
Moderate
Intensity
High
Ending
Happy

A steadily paced, high-tension thriller that immerses the viewer in a claustrophobic and paranoid investigation of a sinister medical conspiracy, creating a constant sense of danger and uncertainty.

  • suspenseful
  • paranoid
  • claustrophobic
  • anxious
  • investigative
  • sinister
  • medical conspiracy
  • organ trafficking
  • female protagonist
  • institutional corruption

Content notes: organ harvesting, medical malpractice, murder, electrocution, drugging.

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FAQ

Coma Plot Questions

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

What is Coma about?

In a stark, dimly lit bedroom that feels both sanctuary and prison, a solitary teenager discovers an uncanny talent: she can shape her dreams with vivid clarity, turning the subconscious into a playground she can explore at will.

Read the full plot summary

When and where does Coma take place?

Coma is set in Boston Memorial Hospital and Jefferson Institute (late 1970s). Set in a contemporary late-1970s urban hospital, the story reflects the era's medical technology and hierarchical culture.

The setting explained

Who are the main characters in Coma?

The story follows Dr. Susan Wheeler, Dr. George Harris, Mark Bellows and Nancy Greenly.

All the characters

What are the main themes of Coma?

The summary picks out 4 themes: Medical Ethics, Investigation, Power and Corruption and Organ Trafficking.

The themes explained

Who directed Coma?

Coma (1978) was directed by Michael Crichton and runs 1 hour 53 minutes.

Michael Crichton’s films

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