Video: The Walking Dead Attraction Sneak Peek at Universal Studios Hollywood What happens when you ignore a sign that reads “Don’t Open, Dead Inside” and you open the doors anyway? We got the answer recently when a horde of hungry zombies invaded Universal Studios Hollywood at a Sneak Peek of their brand new The Walking Dead Attraction (now open!). See what AMC’s The Walking Dead Director Greg Nicotero, Hollywood Horror Nights mastermind John Murdy, and special guests had to say about the thrilling day-time attraction in the video below. Photo Credit: David Sprague.