Jim Caviezel John Reese Actor Michael Emerson Harold Finch Actor Kevin Chapman Lionel Fusco Actor Sarah Shahi Sameen Shaw Actor Amy Acker Root Actor Joshua Close Jeff Blackwell Guest Star LaChanze Mona Guest Star Paige Patterson Laurie Granger Guest Star Jasson Finney Andrius Guest Star Anthony Grasso Gerald Mancini Guest Star Nurit Monacelli Rachel Mancini Guest Star Brian McCarthy Edgar Guest Star Joe Lanza Mikey Guest Star Nick Doolan Reg 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 Chris Fisher Director