Annihilation
Annihilation is a wild movie that will definitely keep you guessing throughout the story. It follows Lena (Natalie Portman) as she enters The Shimmer with a group of women who are there to help her defeat the evil that lurks within. In the end, she's fighting with her doppelganger. She apparently makes it out alive, but her eyes still shimmer, which indicates that it's not actually her. The director has said that it is her, but the shimmer is within everyone already.