James Olson portrays the character Father Adamsky, a priest who becomes involved in the Montelli family's haunting.
Burt Young plays Anthony Montelli, the patriarch of the Montelli family around whom supernatural events unfold.
Rutanya Alda takes on the role of Delores Montelli, the mother in the Montelli family struggling with the possession's effects.
Jack Magner stars as Sonny Montelli, a troubled son in the family at the center of the demonic possession.
Andrew Prine appears as Father Tom, a supporting priest character aiding the Montelli family in their ordeal.
Diane Franklin portrays Patricia Montelli, a family member profoundly impacted by the supernatural occurrences.
Moses Gunn acts as Turner, a character involved in the unfolding events in the Montelli household.
Ted Ross plays Mr. Booth, a character whose role in the story intertwines with the Montelli family's haunting.
Erika Katz embodies the character Jan Montelli, a family member affected by the sinister forces within their home.
Brent Katz takes on the role of Mark Montelli, another member of the family experiencing the possession's horrors.
Leonardo Cimino portrays Chancellor, a character entangled in the supernatural events surrounding the Montelli family.
Danny Aiello III appears as Removal Man 1, a character involved in the unsettling events taking place in the Montelli household.
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