'Cuckoo' got you confused? Let's dig into its big reveals.

The Dan Stevens–fronted new horror-thriller, Cuckoo, has a big reveal that's proven to be quite divisive among critics. On the surface, the movie appears to be the story of a young woman being chased by a monster. But by the final act, Cuckoo has morphed into something far stranger and more complicated. 

Written and directed by Tilman Singer, the film follows 17-year-old American Gretchen (Hunter Schafer), who’s just moved to a resort in Bavaria with her father, Luis (Márton Csókás), stepmother...