Virginia Madsen
— Laura Harris
Mark Valley
— Greg Harris
Matthew Fahey
— Mitchell Harris
Sosie Bacon
— Summer Harris
Jacob Buster
— Jonathan Harris
Shani Atias
— Beth
Carly Pope
— Amanda
Joshua Burrow
— Kyle (as Josh Burrow)
Tangie Ambrose
— Lab Assistant
Robert Carbo
— Young Mitchell
Liberté Chan
— News Reporter
Feodor Chin
— Dan Chang
Michael Esparza
— Stuart
Nick Holmes
— Patrick Kline
Lillian Ellen Jones
— Young Summer