The Devil Inside

On 1989, emergency services received a call from Maria Rossi on 911 confessing that she had brutally murdered three people. 20 years later, her daughter Isabel tries to understand the truth about what happened that night and travels to the Centrino Hospital for the Criminally Insane in Italy, where her mother has been locked up to determine whether she is mentally ill or possessed by demons. Isabel decides to recruit two young exorcists who might cure her mother using unconventional methods that combine science and religion, and they end up coming face to face with pure evil in the form of four powerful demons that possess Maria. Many have been possessed by one, but only one has been possessed by many.