A Demon Within (2017)

Plot

A small-town doctor, known for his skepticism, faces his own inner turmoil when a teenage girl becomes possessed in his family's ancestral home. As he grapples with disbelief and fear, he must confront the haunting legacy of his past while racing against time to save her. The struggle between rationality and the supernatural challenges his understanding of reality and forces him to confront the darkness lurking within himself. Ultimately, he must choose between his scientific beliefs and the desperate need to rescue a life caught in a terrifying battle.