Suffering from early-onset dementia or cognitive impairment.
After Tomas decides he must help the Rances, he investigates a strange noise in their attic. He witnesses a rat being supernaturally killed and is briefly confronted by a possessed Casey , though she quickly reverts to a "normal" state when her mother arrives. [S1E1] The Exorcist
Angela’s younger daughter, who initially seems normal but is revealed to be the true target of the possession. Key Story Developments Suffering from early-onset dementia or cognitive impairment
The pilot episode of the TV series The Exorcist (2016), titled "," establishes a modern-day story set in the same universe as the original 1973 film. Plot Overview [S1E1] The Exorcist