A Demon Within2017

Horror Vault's take

When a teenage girl falls into a terrifying and inexplicable state inside his family's former home, a rationalist small-town doctor finds his scientific worldview pushed to its absolute limits. What begins as a medical mystery quickly takes on a far darker, more ancient shape — one that may be tangled up in the doctor's own history. Confronting forces he doesn't believe in may be the only way to save an innocent life, but the cost could be his own sanity. This slow-burn supernatural drama asks how far a man will go when reason alone is no longer enough.

Content: Demonic Possession Themes, Disturbing Supernatural Imagery