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 Brett Cullen Nathan Ingram Guest Star Cara Buono Martine Rousseau Guest Star Wrenn Schmidt Dr. Iris Campbell Guest Star Kevin Kliner Nick Dawson Guest Star Jason Ritter Simon Lee Guest Star Michael Bryan French Gov. James Murray Guest Star Ned Van Zandt Commissioner Kevin Hatch Guest Star Caris Vujcec Michelle Perez Guest Star Anthony Arkin Mike Fisher Guest Star David Beach Douglas Rogers Guest Star Eric Gravez Eddie Guest Star Jasmin Walker Hotel Receptionist Guest Star Oriana Oppice Woman With List Guest Star Kevin Prowse Cop Guest Star Eileen Faxas Newscast Host Guest Star J.J. Abrams Executive Producer Bryan Burk Executive Producer Jonathan Nolan Executive Producer David Semel Executive Producer Greg Plageman Executive Producer Lucas O'Connor Writer Kenneth Fink Director