The most unusual thing about Remain may be the way the story came together. Nicholas Sparks is not simply the novelist whose work Shyamalan later adapted. The two co-created the underlying love story, then developed it through different forms.
It gives the project a built-in conversation between page and screen. Sparks’ version exists as a novel. Shyamalan’s version exists as a film. They are related, but they are not the same creative act, and that makes Remain more interesting than a standard adaptation pipeline.
It also explains why the project has been so easy to describe and so hard to pin down. The basic shape is clear: romance, mystery, and a darker supernatural current underneath. But the exact balance of those elements is still part of the intrigue, because the story was never meant to live only in one medium.
For fans following the film side, the book is not just side material. It is part of the whole experiment. That is rare, and it helps Remain feel like a genuine outlier in both Shyamalan’s filmography and Sparks’ body of work.