Julianna Margulies
Lt. Col. Nancy Jaax (6 eps)
Daniel Dae Kim
Matthew Ryker (6 eps)
Noah Emmerich
Lt. Col. Jerry Jaax (6 eps)
Tony Goldwyn
Bruce Ivins (6 eps)
Nick Searcy
Frank Mays (6 eps)
Liam Cunningham
Wade Carter (6 eps)
Dylan Baker
Ed Copak (6 eps)
James D'Arcy
Trevor Rhodes (6 eps)
Mark Kelly
Bruce Domanski (6 eps)
Robert Sean Leonard
Walter Humbolt (6 eps)
Lenny Platt
Capt. Kyle Orman (6 eps)
Topher Grace
Peter Jahrling (6 eps)
Paul James
Ben Gellis (6 eps)
Robert Wisdom
Vernon Tucker (6 eps)
Ian Colletti
Agent Chris Moore (6 eps)
Vanessa Matsui
Jody Hall (6 eps)
Carlos Gonzalez-Vio
Simon Kurz (6 eps)
Sochi Fried
Janice (5 eps)
Morgan Kelly
Eric Sykes (5 eps)
Grace Gummer
Melinda Danport (4 eps)
Dawn Olivieri
Dani Toretti (4 eps)
Denyce Lawton
Sheila Willis (4 eps)
Raven Dauda
Dr. Halstrom (4 eps)
Libby Osler
Reese (3 eps)
Ayesha Mansur Gonsalves
Dr. Adya Livingston (3 eps)
Clark Backo
Liz Gellis (2 eps)
Harry Hamlin
Tom Brokaw (2 eps)
Kristin Booth
Nancy Haigwood (2 eps)
Conrad Coates
Col. Marlon Charles (2 eps)
William Poulin
Quinton (2 eps)
Richard Waugh
Scott Parrish (2 eps)
Justin Mader
Steven Hatfill (2 eps)
Martin Happer
Thomas Ivins (2 eps)
Rob Stewart
General Dwyer (2 eps)
Rosemary Dunsmore
Tante de Nancy (1 eps)
Ashton James
Will (1 eps)
Cody Ray Thompson
Dale Clemons (1 eps)
Michelle Giroux
Jean Malecki (1 eps)
Enrico Colantoni
Rudy Giuliani (1 eps)
Lisa Ryder
Dr. Marci Layton (1 eps)
Tony Craig
Joe Curseen (1 eps)
Jana Peck
Bruce's Mother (1 eps)
Chelsea Preston
Mara Linscott (1 eps)
Sarah Allen
Dawn (1 eps)
Lindsay Mullan
Townie #1 (1 eps)