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 Cara Buono Martine Rosseau Guest Star Wrenn Schmidt Dr. Iris Campbell Guest Star Andreas Damm Romeo Guest Star Faina Reinhardt Katya Rodchenko Guest Star Adria Arjona Dani Silva Guest Star Mike Figueroa Alex Ortiz Guest Star Jake Silbermann Phil Cain Guest Star Rob Morgan Howard Guest Star Angel Dillemuth Meech Guest Star Jessica Pimentel Floyd Guest Star Charlie Romanelli Elvis Munson Guest Star Tom Greer Detective Walsh Guest Star Luis Da Silva Jr. Garcia Guest Star Elizabeth Ingham Trophy Wife Guest Star Samuel Joseph Trinitario Deputy 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 Richard J. Lewis Director