This fall Special Agent Sarah Walker will get a blast from the past as she attends her ten-year high school reunion and comes face-to-face with her old nemesis. Nicole Richie will play a spiteful and sarcastic character who tortured the special agent for years. Sarah Walker has to go to the reunion for a mission; her date, of course, is Chuck.

Executive producer Josh Schwartz says Nicole Richie is actually quite funny: "Nicole auditioned for the part and was very funny. This role is a great opportunity for her to show off her comedic skills and be diabolically evil and kick some butt."