Julianna Margulies

as Lt. Col. Nancy Jaax

6 episodes

Daniel Dae Kim

as Matthew Ryker

6 episodes

Noah Emmerich

as Lt. Col. Jerry Jaax

6 episodes

Tony Goldwyn

as Bruce Ivins

6 episodes

Nick Searcy

as Frank Mays

6 episodes

Liam Cunningham

as Wade Carter

6 episodes

Dylan Baker

as Ed Copak

6 episodes

James D'Arcy

as Trevor Rhodes

6 episodes

Mark Kelly

as Bruce Domanski

6 episodes

Robert Sean Leonard

as Walter Humbolt

6 episodes

Lenny Platt

as Capt. Kyle Orman

6 episodes

Topher Grace

as Peter Jahrling

6 episodes

Paul James

as Ben Gellis

6 episodes

Robert Wisdom

as Vernon Tucker

6 episodes

Ian Colletti

as Agent Chris Moore

6 episodes