A Demon Within (2017) is a Horror, Drama, Romance film that follows a skeptical, small town doctor is forced to confront his personal demons in order to save the life of a teenage girl who has become possessed in his family's old house. Currently, you can watch A Demon Within on Screambox Amazon Channel, Amazon Video, Apple TV Store, Google Play Movies. Streaming availability may vary by country and platform over time. It has a user rating of 5.2 out of 10 from 32 votes. Fans of horror movies may also want to explore similar titles below.