An awkward office drone becomes increasingly unhinged after a charismatic and confident look-alike takes a job at his workplace and seduces the woman he desires.
Jesse Eisenberg
as Simon James / James Simon
Mia Wasikowska
as Hannah
Wallace Shawn
as Mr. Papadopoulos
Yasmin Paige
as Melanie
Noah Taylor
as Harris
James Fox
as The Colonel
Cathy Moriarty
as Kiki
Phyllis Somerville
as Simon's Mother
Gabrielle Downey
as Strange Woman
Jon Korkes
as Detective
Craig Roberts
as Young Detective
Kobna Holdbrook-Smith
as Guard / Doctor
