"The Devil Inside" is a 2012 horror film directed by William Brent Bell. The story follows Maria Rossi, a woman who, after being involved in a brutal incident during an exorcism, is institutionalized. Years later, her daughter, Isabella, seeks to uncover the truth about her mother's past and the nature of the demonic possession. The film is presented in a found-footage style, blending documentary elements with fictional storytelling. As Isabella investigates, she encounters disturbing events and confronts the dark forces that haunt her family. The movie explores themes of possession, faith, and the supernatural, culminating in a controversial ending.