• 
  Hans Holzer

  Himself - Parapsychologist
• 
  Corey Johnson

  Himself - Narrator (voice)
• 
  George Lutz

  Himself - Amityville Home Owner (archive footage)
• 
  Kathy Lutz

  Himself - Amityville Home Owner (archive footage)
• 
  Lorraine Warren

  Herself - Clairvoyant
• 
  Joel Martin

  Himself - Journalist
• 
  Ronald DeFeo

  Himself - Convicted Murderer (archive footage)
• 
  Laura DiDio

  Herself - Investigative Reporter

• 
  Don Gomez

  Edward Warren
• 
  Joe Nickell

  Himself - Paranormal Investigator
• 
  Marvin Scott

  Himself - Senior Correspondent, CW11
• 
  Patrick O'Reilly

  Himself - Neighbor
• 
  Ethel Johnson-Meyers

  Herself - Psychic (archive footage)
• 
  Barbara Cromarty

  Herself - Amityville Home Owner (archive footage)
• 
  Emil Pavlik

  Himself - Former Amityville Mayor