Coroner Examines A Woman's Body, But Something's Off When She Doesn't Appear Dead

A suburban house in Grantham, Virginia, becomes the scene of a horrific crime. Police find multiple dead bodies and a strangely preserved, naked woman in the basement with no visible injuries. Unable to identify her, they name her Jane Doe. There are no signs of a forced entry, and the family appears to have been trying to flee. Meanwhile, coroner Tommy and his son Austin are performing an autopsy on another body at their morgue, which has been in their family for generations. Austin's girlfriend Emma arrives, curious about the morgue. She playfully expresses interest in seeing a corpse, and Tommy allows it, showing a body with a bell tied to its ankle, a traditional method to ensure the person is truly dead.

The sheriff arrives with Jane Doe's body, interrupting Austin and Emma's date plans. Austin, sensing the urgency, lets Emma go ahead, promising to meet her later. Jane Doe has no identification or fingerprints, causing Tommy's cat to hiss. The sheriff, with only a hunch about the original crime, asks Tommy to determine Jane's cause of death by morning. Tommy and Austin begin the autopsy in four stages: external, heart and lung, digestive system, and brain. They note Jane appears to be in her mid-20s with intact skin, but her eyes are grey as if dead for days, despite her fresh appearance. Her wrists and ankles are fractured without external signs, and peat, an organic material from northern regions, is found in her nails and hair. They discover her tongue brutally severed, a missing tooth, and a strange thread in her mouth. Examining her private area, they find multiple deliberate cuts.

During the internal examination, the lights flicker, an old song, 'Open Up Your Heart and Let Sunshine In', plays on the radio, and abnormal amounts of blood gush from Jane's body. Her unnaturally small waist suggests prolonged corset use. Her lungs are completely blackened, as if from third-degree burns, despite her intact body. Her heart and other organs are cut and severely damaged, yet her exterior remains pristine. A thunderstorm erupts, and Austin investigates a noise, seeing a fleeting woman's figure. Inside, Tommy cuts his hand on Jane's bones. Austin finds his cat injured in a vent, and Tommy, distressed, mercy-kills it. Austin tries to comfort his father, who returns to the autopsy. They find a Jimson weed flower inside Jane's tissues, a paralyzing agent found in northern regions. The radio warns of a storm, but Tommy insists on finishing the autopsy. They discover a piece of cloth with a human tooth inside, an old shroud with Roman numerals and strange symbols. The thread from Jane's mouth matches the shroud. The tooth fits perfectly, indicating someone had extracted her teeth, wrapped them, and forced her to swallow them, suggesting a ritualistic human sacrifice. The same old song plays, and Austin's concerns grow. Tommy removes Jane's skin, revealing the same disturbing symbols found on the shroud. They find the morgue's body drawers empty.

Tommy, now heeding Austin's fears, attempts to leave, but a fallen tree blocks the exit. Their phone signal is gone. They lock themselves in the office and Tommy tries to call the sheriff, but the call cuts out. A bell rings, and a corpse-like figure aggressively tries to enter. Austin believes Jane is causing the events. Tommy, a man of science, dismisses it, but then a vision of a charred body with grey eyes makes him a believer. They return to the autopsy room, finding Jane's removed organs decomposed, as if her body had been preserving them. They decide to cremate her, but the door locks. Austin breaks a hole, seeing a corpse on the other side. They douse Jane's body in fuel and set it on fire, but the flames don't harm her; instead, they destroy their research. Realizing they can't destroy her, they head for the elevator, which closes on its own. A corpse approaches. The elevator opens, and they get in, but the door closes partially. Tommy kills the approaching corpse with an ax, only to find it's Emma, who had come for their date. Devastated, Austin and Tommy are trapped when the elevator fails again. The incinerator turns on by itself, as they wonder why Jane hasn't killed them yet, theorizing she wants them to suffer, wanting them to discover whatever secret she holds.

Austin suggests they re-examine Jane's cause of death. They cover Emma's body and, struggling through smoke, return to the autopsy room. Tommy is attacked by an invisible force, but they manage to reach Jane. During the brain dissection, they find her brain cells are fully active, meaning she's alive through otherworldly energy. Austin connects symbols on the shroud to a Bible verse, Leviticus 20:27, and Roman numerals for 1693, relating them to the Salem witch trials. Tommy initially dismisses witches as myths, but they realize Jane was a falsely accused woman from 17th-century New England, subjected to brutal torture. Tommy chillingly theorizes that their cruel actions accidentally turned an innocent girl into a witch, and now she seeks revenge by making them feel her pain. Tommy's injured rib is engraved with ritualistic markings. Accepting defeat, Tommy begs Jane to spare Austin. The physical torment shifts to Tommy; his bones fracture, and his eyes turn grey as Jane's body slowly heals. Tommy, in agony, asks Austin to kill him, and Austin reluctantly complies, stabbing his father. Lights return, and the sheriff's voice is heard. However, the sheriff begins singing 'Open Up Your Heart and Let Sunshine In', revealing it as a hallucination created by Jane.

The next day, officers investigate the morgue, confused by the lack of forced entry, mirroring the initial crime scene. A radio announcement confirms continuous sunshine, revealing the storm was a hallucination. Jane's body remains perfectly intact, as if no autopsy was performed. The sheriff, unsettled, orders her body sent to another county, passing the problem to someone else. As an officer transports Jane's body, the haunting song plays on the radio. Jane's toe twitches, and a bell tolls, indicating that her reign of terror has just begun, possibly with Austin as her new host.