The Chicago History Museum is proud to announce the fall Chicago Treasures. Through live conversations, these individuals will discuss how the city has shaped their lives and careers. September 30 features actress Jane Lynch, October 29 features actor William Petersen, and November 19 will feature DJ Terri Hemmert.

On Wednesday, October 29, William Petersen, known most recently for his role as Gil Grissom in CSI: Crime Scene Investigation will be interviewed by Chicago Tribune columnist, Rick Kogan. Petersen has a distinguished background in film, theater, and television. His feature film credits include To Live and Die in LA, Cousins, Young Guns II, Fear, The Contender, and Hard Promises, which he also produced.