The Walking Dead cast and crew made Hall H their own on Friday afternoon as they participated in a Q&A session and debuted an official sneak preview (CLICK HERE to watch the trailer) at the hit zombie series' upcoming fourth season, which premieres with "30 Days Without an Accident" on October 13th on AMC. Moderated by Chris Hardwick, the panelists included Andrew Lincoln, Norman Reedus, Steven Yeun, Lauren Cohan, Danai Gurira, David Morrissey, Scott Wilson, and Chad Coleman. Showrunner Scott M. Gimple along with producers Robert Kirkman, Gale Anne Hurd, Dave Alpert, and special effects makeup supervisor Greg Nicotero were also in attendance. Watch the full panel below.