Jim Caviezel John Reese Actor Michael Emerson Harold Finch Actor Taraji P. Henson Joss Carter Actor Kevin Chapman Lionel Fusco Actor Michael Kelly Mark Snow Guest Star Ken Leung Leon Tao Guest Star Sharon Leal Dr. Madeleine Enright Guest Star Erica Leerhsen Amy Guest Star Geneva Carr Nurse Picket Guest Star Julian Sands Alistair Wesley Guest Star Sam Freed Oliver Veldt Guest Star Bryce Pinkham Leland Rains Guest Star Nick Stevenson Park Uni Guest Star Geoffrey Cantor Sebastian Alta Guest Star Gilbert Cruz Security Manager Guest Star Mia Ellis ER Nurse Guest Star Lohrasp Kansara Albanian Gang Member Guest Star J.J. Abrams Executive Producer Bryan Burk Executive Producer Jonathan Nolan Executive Producer David Semel Executive Producer Greg Plageman Executive Producer Sean Hennen Writer Frederick E.O. Toye Director