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 Enrico Colantoni Carl Elias Guest Star Joshua Close Jeff Blackwell Guest Star Robert Manning Jr. Zachary Guest Star Geoff Pierson FBI SAIC Roberts Guest Star Christine Cartell Brenda Jones Guest Star Reese Madigan Detective 1 Guest Star Deshawn Harold Mitchell Detective 2 Guest Star Sunita Mani Sonum Guest Star Barrington Walters Jr. Banger Guest Star Ed Incle Javier Guest Star R.J. Foster Police Officer Guest Star Debbie Campbell Waitress Guest Star Ryan Quinn Guard Guest Star Mark Doherty First Samaritan Op Guest Star Nicholas Tucci Samaritan Op Guest Star J.J. Abrams Executive Producer Bryan Burk Executive Producer Jonathan Nolan Executive Producer David Semel Executive Producer Greg Plageman Executive Producer Andy Callahan Writer Melissa Scrivner-Love Writer Frederick E.O. Toye Director