The White House grapples with a mysterious biological threat. Their only hope is to crack Sophia during interrogation. Meanwhile, Vicky and Carter keep their hostage captive while they await further instructions. FBI Agent Collier, on her search for Leila, stumbles upon Vicky's secret life. Elsewhere, a powerful businessman, Dempsey with classified intelligence and ties to the White House, emerges from the shadows.

Cast: Jason Ritter, Sarah Roemer, Laura Innes, Ian Anthony Dale, Scott Patterson, Taylor Cole, Lisa Vidal, Bill Smitrovich, Clifton Collins Jr., Zeljko Ivanek, Blair Underwood, D.B. Sweeney, Heather McComb, Julia Campbell, William Russ