Jim Caviezel John Reese Actor Michael Emerson Harold Finch Actor Kevin Chapman Lionel Fusco Actor Sarah Shahi Sameen Shaw Actor Amy Acker Root Actor Joel Haberli President Guest Star Karen Pittman Tracey Phillips Guest Star Will Brill Charlie Vaida Guest Star Theis Weckesser Agent Daniels Guest Star L. Steven Taylor AIC Barnes Guest Star John Quilty Think Tanker Guest Star Nathan James Suit 1 Guest Star Kristine Johnson TV Reporter Guest Star Gregory Porter Miller Officer Reed Guest Star Adrian Alvarado Lt. Johnson Guest Star J.J. Abrams Executive Producer Bryan Burk Executive Producer Jonathan Nolan Executive Producer David Semel Executive Producer Greg Plageman Executive Producer Jacey Heldrich Writer Joshua Brown Writer Tim Matheson Director