[[WMG: Sutter Cane didn't actually write the events of the movie.]]
While John Trent goes off the deep end after discovering that he is a fictional character written by Sutter Cane, he is only half right, and the truth is far worse: Sutter Cane is also a fictional character, written by an EldritchAbomination to write the gateway into our world for its kind. This means that John Trent is a fiction written by a fiction, and his whole world is even ''less'' real than he thinks he's discovered.
* According to TheOtherWiki, Michael De Luca wrote it. Trent is the fictional being created by a fictional insane author who sold his soul and all of fictional reality to a fictional EldritchAbomination all because of Michael De Luca, who proved thoroughly that TheFourthWallWillNotProtectYou certainly swings both ways, if it [[NoFourthWall exists at all.]] I wonder if Trent is aware of the existence of Creator/SamNeill portraying/living out his life?
** Interestingly, you can see the poster for the movie-within-the-movie when Trent goes to see it. It lists John Trent and Linda Styles, as if they themselves were the InUniverse actors portraying their characters...but it also lists JohnCarpenter as the director, suggesting he exists within the fictional world of the movie.