Virginia Madsen as Laura Harris

Mark Valley as Greg Harris

Matthew Fahey as Mitchell Harris

Sosie Bacon as Summer Harris

Jacob Buster as Jonathan Harris

Shani Atias as Beth

Carly Pope as Amanda

Joshua Burrow as Kyle (as Josh Burrow)

Tangie Ambrose as Lab Assistant

Robert Carbo as Young Mitchell

Liberté Chan as News Reporter

Feodor Chin as Dan Chang

Michael Esparza as Stuart

Nick Holmes as Patrick Kline

Lillian Ellen Jones as Young Summer