In The Demon Disorder, fear takes a new form in this atmospheric and psychological horror story that blurs the line between reality and possession.
After a gruesome incident at a secluded mental health facility, Dr. Eliza Hart (Rebecca Hall), a renowned but emotionally distant neurologist, is assigned to investigate a strange new condition — a rapidly spreading affliction that mimics psychosis but defies every known diagnosis. Patients exhibit violent outbursts, distorted speech, and terrifying hallucinations… but they all share one chilling detail: they claim to see the same demon.

As Eliza delves deeper, she discovers that the “disorder” is more than a medical mystery — it’s the resurgence of an ancient evil feeding off emotional trauma and guilt. When her own repressed memories begin to surface, Eliza realizes she may be more connected to the entity than she ever imagined.

With the help of a disgraced demonologist and a teenage survivor whose body bears ancient sigils, Eliza must confront the possibility that the cure isn’t science… but sacrifice.

Dark, cerebral, and unnervingly real, The Demon Disorder is a descent into psychological terror where belief becomes survival — and the mind is the first battlefield.