Ben Affleck

Sheriff Bryce Hammond

Peter O'Toole

Dr. Timothy Flyte

Rose McGowan

Lisa Pailey

Joanna Going

Jennifer Pailey, M.D.

Liev Schreiber

Deputy Stuart 'Stu' Wargle

Nicky Katt

Deputy Steve Shanning

Clifton Powell

Gen. Leland Copperfield

Rick Otto

Scientist Lockland

Valerie Chow

Scientist Yamaguchi

Adam Nelson

Scientist Burke