Rich Skidmore
— Himself
Victoria Harvey
— Herself
Eddie Boles
— Deputy Jason Johnston
Mike Butters
— Paul Stallberg
Tobin Bell
— Jigsaw
Paul Gutrecht
— Mark Rodriguez
Shawnee Smith
— Amanda Young
Cary Elwes
— Dr. Lawrence Gordon
Michael Emerson
— Zep Hindle
Leigh Whannell
— Adam Faulkner-Stanheight
Danny Glover
— David Tapp
Monica Potter
— Alison Gordon
Sven Davison
— Detective Ron Willis
Ken Leung
— Detective Steven Sing
Donnie Wahlberg
— Detective Eric Matthews