Jim Caviezel John Reese Actor Michael Emerson Harold Finch Actor Kevin Chapman Lionel Fusco Actor Sarah Shahi Sameen Shaw Actor Amy Acker Root Actor Julian Ovenden Jeremy Lambert Guest Star Scott Adsit Max Guest Star Christopher Stadulis Barrett Guest Star Edward Chin-Lyn Ghost Hunter Guest Star Samantha Buck Samaritan Doctor Guest Star Kushtrim Hoxha Vasily Guest Star Abbi Snee Brittany Guest Star Kim Ramirez Briggs Guest Star J.J. Abrams Executive Producer Bryan Burk Executive Producer Jonathan Nolan Executive Producer David Semel Executive Producer Greg Plageman Executive Producer Hillary Benefiel Writer Kate Woods Director