Jim Caviezel John Reese Actor Michael Emerson Harold Finch Actor Kevin Chapman Lionel Fusco Actor Sarah Shahi Sameen Shaw Actor Amy Acker Root Actor Enrico Colantoni Carl Elias Guest Star John Nolan John Greer Guest Star Camryn Manheim Control Guest Star John Doman Sen. Ross Garrison Guest Star Winston Duke Dominic Guest Star Luke Kleintank Caleb Phipps Guest Star Wrenn Schmidt Dr. Iris Campbell Guest Star Annie Ilonzeh Harper Rose Guest Star Suzy Jane Hunt Schiffman Guest Star Nick Tarabay Devon Grice Guest Star Jessica Pimentel Floyd Guest Star Robert Manning Jr. Zachary Guest Star Anthony Gaskins Lineman Guest Star Ken Perlstein Senior Lineman Guest Star Logan Crawford Reporter Guest Star J. Oscar Simmons Doorman Guest Star Jason Altman Fireman Guest Star Alban Merdani Arms Dealer Guest Star Joseph Tudisco Bodega Cashier Guest Star Marco Antonio Rodriguez Delivery Guy Guest Star Johnny Solo Elias' Man Guest Star Joseph McKenna Odd Man Guest Star J.J. Abrams Executive Producer Bryan Burk Executive Producer Jonathan Nolan Executive Producer David Semel Executive Producer Greg Plageman Executive Producer, Writer Dan Dietz Writer Chris Fisher Director