Unspeakable

Dina Meyer

Diana Purlow

Pavan Grover

Jesse Mowat

Lance Henriksen

Jack Pitchford

Dennis Hopper

Warden

Jeff Fahey

Governor

Luce Rains

Prison Doctor

Michelle Wolff

Littlefield

Mark Voltura

Littlefield's Partner

Angelo Jaramillo

Flunky

J.D. Garfield

Federale Colonel

Michael Crabtree

Lieutenant

Anthony Dilio

Guard #2

Rick Anglada

State Police Oficer (uncredited)

Marco Rodríguez

Cesar (as Marco Rodriguez)