Jim Caviezel John Reese Actor Michael Emerson Harold Finch Actor Kevin Chapman Lionel Fusco Actor Sarah Shahi Sameen Shaw Actor Amy Acker Root Actor Jessica Hecht Beth Bridges Guest Star Wrenn Schmidt Dr. Iris Campbell Guest Star Annie Ilonzeh Harper Rose Guest Star Katheryn Winnick Frankie Wells Guest Star Ato Essandoh Ray Pratt Guest Star Louis Lourens Mr. Flint Guest Star Jeff LaMarre Carlton Worthy Guest Star Josh Salt Terrified Man Guest Star John Sousa Bartender Guest Star Guyviaud Joseph Security Guy Guest Star Alexander Blaise Wolfram Guest Star J.J. Abrams Executive Producer Bryan Burk Executive Producer Jonathan Nolan Executive Producer David Semel Executive Producer Greg Plageman Executive Producer Ashley Gable Writer Helen Shaver Director