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 Doman Sen. Ross Garrison Guest Star Joshua Close Jeff Blackwell Guest Star Justin Grace Younger Cop Guest Star John Douglas Thompson Murphy Guest Star Amy Tribbey Reese's Mother Guest Star Jack Davis Little Reese Guest Star Rebecca Darke Dying Lady Guest Star Michael De Nola Taxi Driver Guest Star Neal Matarazzo Lt. Kearny Guest Star Kate Kearney-Patch Chairwoman Guest Star Dick Brennan Newscaster Guest Star Kristine Johnson News Anchor Guest Star Miguel Cervantes Uniform Guest Star Jason Tottenham Suited Man Guest Star Dylan Chalfy Hanger Guest Star Wayne Maugans Man Guest Star Jacob Berher Guard Guest Star J.J. Abrams Executive Producer Bryan Burk Executive Producer Jonathan Nolan Executive Producer, Writer David Semel Executive Producer Greg Plageman Executive Producer Denise Thé Writer Chris Fisher Director