The trailer for Goodnight Mommy could be the scariest trailer of all time.

In Theaters - September 11 In the heat of the summer lays a lonesome house in the countryside where nine year old twin brothers await their mother’s return. When she comes home, bandaged after cosmetic surgery, nothing is like before and the children start to doubt whether this woman is actually who she says she is. What ensues is a terrifying observational struggle with fatal consequences on par with THE SHINING and DEAD RINGERS.