What happened over the next 28 days has never been explained.

George Lutz, his wife Kathy, and their three children have just moved into a beautiful, and improbably cheap, Dutch colonial mansion nestled in the sleepy coastal town of Amityville, Long Island. However, their dream home is concealing a horrific past and soon each member of the Lutz family is plagued with increasingly strange and violent visions and impulses.
In The Amityville Horror, consciousness is carried by the dead — a plane of “haunted house”. The story fights on E8/E9 of the E0–E14 reality ladder, compressing possession, trauma, religion, haunting.
Films fighting at the same level of reality, about the same things.
Other films that move a human interior onto the same kind of thing.
Paranormal Activity: Next of Kin (2021)consciousness in the dead · demon‑possessed farm
The Grudge (2019)consciousness in the dead · cursed house
The Unborn (2009)consciousness in the dead · spirit-haunted home
Nefarious (2023)consciousness in the dead · prison possession
Insidious (2011)consciousness in the dead · spirit-realm horror
What Lies Beneath (2000)consciousness in the dead · haunted houseThe same preoccupations carried by a different kind of thing — grief told through the dead, an animal, a machine.
The Deliverance (2024)consciousness in monsters · possession, religion
The Conjuring 2 (2016)consciousness in monsters · possession, religion
Annabelle Comes Home (2019)consciousness in objects · possession, religion
Brahms: The Boy II (2020)consciousness in objects · possession, trauma
Franklyn (2008)consciousness carried elsewhere · religion, trauma
Fallen (1998)consciousness carried elsewhere · possession, religion