Jim Caviezel John Reese Actor Michael Emerson Harold Finch Actor Kevin Chapman Lionel Fusco Actor Sarah Shahi Sameen Shaw Actor Amy Acker Root Actor John Nolan John Greer Guest Star Nazneen Contractor Maria Martinez Guest Star Haaz Sleiman Omar Risha Guest Star Michael Gill Rene Lapointe Guest Star William Aradie Christos Sevon Guest Star Casey Biggs Ken Davis Guest Star Usman Ally Jamal Risha Guest Star Nicholas Kohn Prison Guard Guest Star Amr El-Bayoumi Legionnaire 3 Guest Star Robert O'Gorman Annoyed Guy Guest Star Malachy Cleary Attorney Guest Star Maceo Oliver NYPD Patrolman Guest Star Alec Beard UN Guard 1 Guest Star J.J. Abrams Executive Producer Bryan Burk Executive Producer Jonathan Nolan Executive Producer David Semel Executive Producer Greg Plageman Executive Producer Tony Camerino Writer Jeffrey Hunt Director