Jim Caviezel John Reese Actor Michael Emerson Harold Finch Actor Kevin Chapman Lionel Fusco Actor Sarah Shahi Sameen Shaw Actor Amy Acker Root Actor Boris McGiver Hersh Guest Star Camryn Manheim Diane Claypool Guest Star Saul Rubinek Arthur Claypool Guest Star Jennifer Lim Bank Manager Guest Star Tuck Milligan Finch's Father Guest Star Chris Bert Young Harold Finch Guest Star Justin Morck Heyward Guest Star Donnie Kehr Senior Officer Guest Star Mark David Watson Thug Guest Star Alma Cuervo Diane Claypool Guest Star J.J. Abrams Executive Producer Bryan Burk Executive Producer Jonathan Nolan Executive Producer David Semel Executive Producer Greg Plageman Executive Producer Lucas O'Connor Writer Richard J. Lewis Director