Susan, a single mother of two, works as a waitress in a small town. Her son, Henry, is an 11-year-old genius who not only manages the family finances but acts as emotional support for his mother and younger brother. When Henry discovers that the girl next door has a terrible secret, he implores Susan to take matters into her own hands.
Jaeden Martell
as Henry Carpenter
Naomi Watts
as Susan Carpenter
Maddie Ziegler
as Christina Sickleman
Jacob Tremblay
as Peter Carpenter
Sarah Silverman
as Sheila
Lee Pace
as Dr. David Daniels
Dean Norris
as Glenn Sickleman
Bobby Moynihan
as John
Tonya Pinkins
as Principal Wilder
Geraldine Hughes
as Mrs. Evans
Jackson Nicoll
as Morris
Joel Marsh Garland
as Big Ed
