Amityville II: The Possession is a 1982 horror film directed by Damiano Damiani. The screenplay by Tommy Lee Wallace is based on the novel Murder in Amityville by the parapsychologist Hans Holzer. It is a prequel to The Amityville Horror, set at 112 Ocean Avenue and featuring the fictional Montelli family loosely based on the DeFeo family. The cast includes Academy Award nominee Burt Young who was finding fame in Rocky at the time; there are a few references to the Rocky films within Amityville II. This film includes one of Young's rare darker roles as he plays an abusive and violent father in contrast to his more easy-going roles. It is the second movie in the Amityville Horror saga. Amityville II set the pattern for low-budget sequels with little reference to real life events in Amityville, and is the only other film in the series to feature music composed by Lalo Schifrin.
The Montelli family moved into what they think would be the house of their dreams, but there is an evil presence lurking within. Demons terrorize the family, causing them to fall apart. The mother tries to get the local priest, Father Frank Adamsky (Olson), to bless the house but he is driven away by her abusive and sacrilegious husband before he can properly help. The Montelli's elder son, Sonny (Magner), falls victim to demonic possession. During his possession he gets his sister Patricia (Franklin) to play a game where he is a famous photographer, and her as is his model. She agrees and eventually ends up having sex with him. The evil spirits cause Sonny to tear the family apart and he is forced to murder his parents and siblings. Father Adamsky realizes Sonny is possessed and asks the church for permission to perform an exorcism but, this was refused when they didn't believe him. He therefore takes it upon himself to free Sonny's soul, although freeing him, he ends up possessed by the demon instead.