TV-14
S2 • E4 Oct 20, 2008 44m8.67.9
Chuck's memory flashes when seeing nerdy engineer Mark Ratner in Buy More, the partner of Sarah's high-school nemesis Heather Chandler. He's suspected of selling secret military technology. So Chuck accompanies Sarah, under her real name Jenny, to their high school-reunion. They and babysitter Casey look for possible buyers, but soon discover Mark is being blackmailed, only it's unclear who the fiends among the (fake?) alumni are.
