Stephen King only released Pet Sematary because he wanted out of his book deal at the time. The release allowed him to leave the publisher, but his issues with the book, one being that it was far too dark, have persisted since publication.
In an interview with Entertainment Weekly concerning the new adaptation of the book, King mentioned he had an idea for the ending of the movie -- one that would almost make up for the dark tone of the novel.
According to producer Lorenzo di Bonaventura, the filmmakers had three choices for their ending -- dark, darker and darkest, and they chose the darkest ending.
While the ending of Pet Sematary won't be spoiled here, there is a moment in the film where the Creed's lock little Gage in a car to keep him safe while dealing with their daughter who came back from the dead very different than when she departed.
However, Stephen King had his own idea for an ending, one that might exorcise the demons that linger after having the toddler run over by a truck in his book, only to return as the demon spawn killer.
“I talked about an ending where Gage is walking up the middle of the road," King said. "We see dawn, and we hear a truck coming, and think, ‘Oh my God, he’s gonna get greased in the road. That’s how this is gonna end!’ Then at the last second, this woman pulls him out of the road and rescues him, and says, ‘Where’s your mommy and daddy?'”
Of course, for anyone who has read the book, that might not be the best thing for this kind Samaritan. The movie eventually took a different angle in its conclusion.
Directed by Kevin Kölsch and Dennis Widmyer, Pet Sematary stars Jason Clarke, Amy Seimetz, Jeté Laurence, Hugo and Lucas Lavoie, and John Lithgow. The Stephen King adaptation is in theaters now.