The movie is actually from a book by Stephen King called The Body. When they were gonna put it to a motion picture, they found the story was a bit too strong for the title The Body, based on a young kid's movie. It would be too heavy.
“The poor monkey, quietly seated on the ground, seemed to be in sore trouble at this display of anger.”
“Remember happiness doesn't depend upon who you are or what you have; it depends solely on what you think.”