Nicolas Falacci Creator Cheryl Heuton Creator Rob Morrow Senior Special Agent Don Eppes Actor David Krumholtz Prof. Charlie Eppes Actor Judd Hirsch Alan Eppes Actor Alimi Ballard Agent David Sinclair Actor Peter MacNicol Prof. Larry Fleinhardt Actor Diane Farr Agent Megan Reeves Actor Navi Rawat Amita Ramanujan Actor Dylan Bruno Agent Colby Granger Actor Aya Sumika Special Agent Liz Warner Guest Star Sean Patrick Flanery Jeff Upchurch Guest Star Ari Graynor Ella Pierce Guest Star William Atherton Warren Pierce Guest Star Steffen Guest Star David Clayton Rogers Santee , Steffen Cavani Guest Star Stephanie Bast Gina Guest Star Vanessa Britting Harper Simms Guest Star John Forest Lucas Cavani Guest Star Ridley Scott Executive Producer Tony Scott Executive Producer Alex Gansa Executive Producer Brooke Kennedy Executive Producer David W. Zucker Executive Producer Sekou Hamilton Writer Alex Zakrzewski Director