Jim Caviezel John Reese Actor Michael Emerson Harold Finch Actor Kevin Chapman Lionel Fusco Actor Sarah Shahi Sameen Shaw Actor Amy Acker Root Actor Quinn Shephard Claire Mahoney Guest Star David Starzyk David Guest Star Andreas Damm Romeo Guest Star Samantha Posey Pushy Student Guest Star Dan McCabe Hipster Geek Guest Star Brendan Burke Jackass Biker Guest Star Antoine Harris Street Tough 1 Guest Star Marco Reininger PMC Guest Star J.J. Abrams Executive Producer Bryan Burk Executive Producer Jonathan Nolan Executive Producer David Semel Executive Producer Greg Plageman Executive Producer Dan Dietz Writer Melissa Scrivner-Love Writer Chris Fisher Director