Lt. Col. Nancy Jaax (6 episodes)
Matthew Ryker (6 episodes)
Lt. Col. Jerry Jaax (6 episodes)
Bruce Ivins (6 episodes)
Frank Mays (6 episodes)
Wade Carter (6 episodes)
Ed Copak (6 episodes)
Trevor Rhodes (6 episodes)
Bruce Domanski (6 episodes)
Walter Humbolt (6 episodes)
Capt. Kyle Orman (6 episodes)
Peter Jahrling (6 episodes)
Ben Gellis (6 episodes)
Vernon Tucker (6 episodes)
Agent Chris Moore (6 episodes)
Jody Hall (6 episodes)
Simon Kurz (6 episodes)
Janice (3 episodes)
Erin O'Connor (2 episodes)
Eric Sykes (5 episodes)
Melinda Danport (4 episodes)
Dani Toretti (4 episodes)
Sheila Willis (4 episodes)
Dr. Halstrom (4 episodes)
Reese (3 episodes)
Dr. Adya Livingston (3 episodes)
Liz Gellis (2 episodes)
Tom Brokaw (2 episodes)
Nancy Haigwood (2 episodes)
Col. Marlon Charles (2 episodes)
Quinton (2 episodes)
Scott Parrish (2 episodes)
Steven Hatfill (2 episodes)
Thomas Ivins (2 episodes)
General Dwyer (2 episodes)
Tante de Nancy (1 episode)
Will (1 episode)
Dale Clemons (1 episode)
Jean Malecki (1 episode)
Rudy Giuliani (1 episode)
Dr. Marci Layton (1 episode)
Joe Curseen (1 episode)
Bruce's Mother (1 episode)
Mara Linscott (1 episode)
Dawn (1 episode)
Townie #1 (1 episode)
Male Scientist #3 (1 episode)
Executive Producer (3 episodes)
Director (3 episodes)
Senior Colorist (6 episodes)
Associate Producer (6 episodes)
Teleplay (3 episodes)
Story (1 episode)
Executive Producer (6 episodes)
Co-Executive Producer (6 episodes)
Executive Producer (6 episodes)
Teleplay (4 episodes)
Story (1 episode)
Producer (6 episodes)
Line Producer (6 episodes)
Producer (6 episodes)
Co-Producer (6 episodes)
Teleplay (3 episodes)
Writer (1 episode)
Original Music Composer (6 episodes)