In The Exorcist III, as the plot unravels, it is clear that the demon possessing Regan McNeil made the spirit of Gemini Killer to possess elderly folks from the hospital to commit those murders.

First the black boy, then that priest got decapitated in the confession booth, then Father Dryer in that hospital bed.

What is the motivation behind those murders? Was it revenge because of what happened in the first movie, the demon wanted to exact revenge to priests in general? If so then why the boy?

  • The boy was killed for unknown reason, but it was discovered that the voice the demon uses to possess Regan McNeil is Kintrey's mother's voice. Apr 16 at 15:32

2 Answers 2


The movie doesn't go into it as much as the novel (Legion) does, but the Gemini Killer's motive is to shame his father, whom he hated. His victims all have a name beginning with 'K', as his father did: Thomas Kintry, Father Joseph Kevin Dyer, Father Kanavan, Nurse Amy Keating, Mary Kinderman (attempted). Not to mention he's possessing Father Damien Karras!

That many of his victims are related to the church or people involved in the original Exorcism is the influence of the demon. Kintry was (if I recall correctly) an altar boy at his church, the priests are obvious (and Dyer was a close personal friend of Karras), the Nurse was a devout Christian, Mary is Karass' friends daughter etc.


Quote: "The Gemini's spiritual "master", who had possessed the girl Regan MacNeil, was furious at being pushed out of the child's body and is exacting its revenge by putting the soul of the Gemini Killer into the body of Father Karras. Each evening, the soul of the Gemini leaves the body of Karras and possesses the elderly people with senile dementia elsewhere in the hospital and uses them to commit the murders."

Source Wiki. Writer's subplots.

  • That part of the plot is clear to me. I'm just looking for motives behind all those killings. Or may be you're somewhat correct. There are no motives. Just random acts of fury.
    – bluearth
    Sep 6, 2017 at 12:46
  • The motive was simple, revenge. Sep 9, 2017 at 8:59
  • Then why the boy? He wasn't member of the clergy. Was it just the case of being in the wrong place at the wrong time?
    – bluearth
    Sep 9, 2017 at 21:50
  • Everyone in that movie was in the wrong place at the wrong time. Especially that Nurse in the rest home that had her head chopped off by those big shears, remember, just as she went out of camera. shudder Sep 18, 2017 at 0:05
  • @bluearth - does a demon really need a motivation that makes some kind of objective logical sense? Don't demons revel in the violence and mayhem of evil? Wouldn't taking the life of an innocent be just a delicious for a demon vs. someone who "deserved" it? Nov 15, 2017 at 22:10

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