Anthony and Dolores Montelli, along with their four children, move into their dream house in Amityville and are immediately plagued by a string of paranormal experiences. When the abusive Anthony wrongly places the blame on their children, Dolores recruits a local Catholic priest to exorcise the house.

James Olson
as Father Adamsky

Burt Young
as Anthony Montelli

Rutanya Alda
as Delores Montelli

Jack Magner
as Sonny Montelli

Andrew Prine
as Father Tom

Diane Franklin
as Patricia Montelli

Moses Gunn
as Turner

Ted Ross
as Mr. Booth

Erika Katz
as Jan Montelli

Brent Katz
as Mark Montelli