"THE BEGINNING OF THE END"
05/16/2011 (09:00PM - 10:00PM) (Monday) : A TRIUMPHANT RETURN – ROGER BART GUEST STARS -- President Martinez (Blair Underwood) makes a triumphant albeit shaky return to the White House, determined to punish the traitors who conspired against him. Sophia (Laura Innes) forges ahead with her plan, while battling a new enemy -- the guilt that has begun to plague her. Sean (Jason Ritter) and Vicky (Taylor Cole) form an impromptu team with Sterling (Željko Ivanek) and Simon (Ian Anthony Dale) in order to track down Sophia's headquarters and stop her before the destruction of all human life. Sarah Roemer, Bill Smitrovich, and Lisa Vidal also star.
Source: NBC Entertainment