ABC | 10:00 pm
Just as a stunning attack on America’s center of political power launched this drama’s first year, another one may end it in "Brace for Impact." President Kirkman (Kiefer Sutherland) orders a coast-to-coast search for the chief conspirator, while Hannah (Maggie Q) goes her own way in trying to avert another national tragedy. Rob Morrow and Geoff Pierson guest star. Natascha McElhone, Italia Ricci, Kal Penn and Adan Canto also star.