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 Julian Ovenden Jeremy Lambert Guest Star Joshua Close Jeff Blackwell Guest Star LaChanze Mona Guest Star James Chen James Ko Guest Star Mark H. Dold Administrator Garcia Guest Star Jenna Stern Dr. Mason Guest Star Sonnie Brown Carroll Guest Star John Mondin Paulie Guest Star Christina Saragaglia Punk Rocker Guest Star Kim Ramirez Briggs Guest Star Antonio David Lyons Samuel Guest Star Martin Ewans Sid Guest Star Elena Shaddow Ally Guest Star James Ciccone Frank Capello Guest Star Jennifer Fouche Mother Guest Star Jon Collin Barclay Rugby Player Guest Star Leajato Amara Robinson Orderly 1 Guest Star Brian Michael Smith Patrolman Guest Star Ras Enoch McCurdie Gangster 1 Guest Star Robin Rieger Reporter 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 Kenneth Fink Director