Naomi Watts stars as Susan, a single mother of two, working as a waitress in a small town. Her son, Henry (Jaeden Lieberher), is an 11-year-old genius who not only manages the family finances, but acts as emotional support for his mother and younger brother (Jacob Tremblay). When Henry discovers that the girl next door has a terrible secret, he implores Susan to take matters into her own hands in this imaginative and emotional drama from director Colin Trevorrow (Jurassic World).