Goodnight Mommy

Goodnight Mommy is a 2014 Austrian psychological horror film, written and directed by Veronika Franz and Severin Fiala. The film stars Susanne Wuest and twin actors Elias and Lukas Schwarz, and follows the complex relationship between twin boys and their newly-returned-from-the-hospital mother in a large isolated house. The boys begin to question the woman's identity, believing that she isn't the same person as the one who went to surgery, and therefore wondering if she is their real mother.