BEGIN SLIDESHOW The Walking Dead season 9 trailer teaser debuts Ahead of the series’ Hall H panel tomorrow at San Diego Comic-Con, AMC has released a The Walking Dead season 9 trailer teaser, offering the first glimpse of footage from the new episodes. Check it out in the player below and look for the full trailer tomorrow! Based on the comic book series written by Robert Kirkman and published by Image Comics, The Walking Dead tells the story of the months and years that follow after a zombie apocalypse, and follows a group of survivors, led by police officer Rick Grimes, who travel in search of a safe and secure home.