Shelley (2016) online

Louise and Kasper, a Danish couple, live in an isolated villa in the middle of the forest away from modern life, technology and even electricity. Louise's biggest dream is to become a mother but she is unable to have children. She finally decides, out of desperation, to seal a pact with her Romanian maid, Elena. Elena accepts to bear Louise's child as a surrogate mother in exchange for a large amount of money. The life growing inside of her is taking shape too fast, affecting the lives of everyone like an evil force. Paranoia and horror set in around the inevitable birth...