Chuck Versus the Cougars (S02E04)

Sarah's teenage insecurities bubble to the surface when she runs into her school nemesis, Heather Chandler (Nicole Richie). But in order to stymie a plot involving bombs, Sarah must attend her high-school reunion and go face-to-face with Heather. Meanwhile, with Buy More bigwig Big Mike absent, Lester is left in charge of carrying out a new sales policy. (National Broadcasting Company (NBC))