Jamie Bell as Bryon Widner

Danielle Macdonald as Julie Price

Vera Farmiga as Shareen

Bill Camp as Fred 'Hammer' Krager

Louisa Krause as April

Zoe Colletti as Desiree

Kylie Rogers as Sierra

Colbi Gannett as Iggy

Mike Colter as Daryle Jenkins

Mary Stuart Masterson as Agent Jackie Marks

Seán Cullen as Dr. Bruce Shack

Daniel Henshall as Slayer

Russell Posner as Gavin

Jenna Leigh Green as Rebeca Ramos

Jaime Ray Newman as Melissa Frye

Tyler WIlliamson as Young Bryon

Steven Vacnin as Arab Boy

Scott Thomas as Sean

Portia as Lonnie's Mom

Ari Barkan as Bulldog

Justin L. Wilson as Mike

Michael Villar as Jerry

Rob Giumarra as Agent Lopez

Maliq Johnson as Lonnie

Rob Figueroa as Prophet

Joanna Herrington as Dr. Larson

Samantha Jones as Sheryl Bennett

Cecil Blutcher as Greg

Walid Chaya as Arabic Man