Jake Gyllenhaal
Adam Bell / Anthony Claire
Sarah Gadon
Helen Claire
Mélanie Laurent
Mary
Isabella Rossellini
Adam's Mother
Joshua Peace
Carl
Tim Post
Anthony
Kedar Brown
Security Guard
Darryl Dinn
Video Store Clerk
Megan Mane
Lady in the Dark Room
Misha Highstead
Lady in the Dark Room
Alexis Uiga
Lady in the Dark Room
Kiran Friesen
Sad, Broken Woman (uncredited)
Loretta Yu
Receptionist (uncredited)
Stephen R. Hart
Bouncer (uncredited)
Paul Stephen
Dark Room Patron (uncredited)