Ed O'Neill Det. Mike Mooney Actor Jeffrey Pierce Det. Vincent Trout Actor David Strathairn Agent Will Preecher Actor Titus Welliver Agent Jimmy Flynn Actor Michael Madsen Terry Maddock Actor Donnie Wahlberg Chris Scott Actor Glynn Turman Agent Teddy Olsen Actor Kim Dickens Agent Sarah Day Actor Sebastian Roché Actor Pasha D. Lychnikoff Guest Star Michael Rispoli Guest Star Samantha Buck Guest Star Elizabeth Regen Guest Star Brooke Smith Guest Star Frank Pellegrino Guest Star Peter Appel Guest Star Maria Thayer Guest Star Yul Vazquez Guest Star James Naughton Guest Star Dylan Baker Guest Star David Milch Executive Producer, Writer Charlie Haid Director Anthony Yerkovich Executive Producer, Writer Matthew Penn Director J. Miller Tobin Director David Jones Director Stephen Adly Guirgis Writer Elizabeth Sarnoff Writer Bernadette McNamara Writer