Amityville 3-D (also known as Amityville III: The Demon) is a 1983 supernatural horror film directed by Richard Fleischer and starring Tony Roberts, Tess Harper, Robert Joy, Candy Clark, Lori Loughlin and Meg Ryan.

It is the third film based in the Amityville Horror series, it was written by William Wales, a pseudonym for David Ambrose.

The character of John Baxter (Roberts) is loosely based on Stephen Kaplan, who was trying to prove the Lutzes' story was a hoax at the time.

John believes Clifford died of a stroke, even after Melanie shows him some photos she took of the real estate agent before his death, depicting him as a rotting corpse.

Melanie's death is ruled accidental by everyone, including John, who remains oblivious to the evil in his home.

While John is away one day, his daughter, Susan, her friend Lisa, and two boyfriends use a Ouija board in the attic.

Outside John arrives home to find Susan's friends bringing her lifeless body to shore.

Much of Elliot's team is killed by flying and exploding objects, but John, Nancy, and several others escape through a window.

[7] Variety wrote, "A new cast of characters and the addition of 3-D does little to pump new life, supernatural or otherwise, into this tired genre.”[8] Janet Maslin of The New York Times wrote, "Once the first two films in a series have exhausted most opportunities for action, the third is liable to average half a dozen exposition scenes for every eventful episode."

Of the 3D, she said "3-D exposition is the stuff of which headaches are made; the footage tends to be so dark that you can barely tell whether it's night or day.