This movie will haunt you--make you extremely uncomfortable, especially with the portrayals of sympathy, grief, and survival coping. And how uncomfortable others can be in that process.I am a big reader as well as a film buff. It simultaneously reminded me of Christopher Coakes novel "You Came Back," and Stephen King's novel "Bag of Bones." You have to watch it carefully to catch the nuances. Some of them are so well done, but you have to watch very carefully. I am usually very good at guessing the twists and outcomes of films. This was not the case with this one. I had to watch to the final credits started and then still had to process what happened.