"Sincere thanks to the fans, who have welcomed 'The Walking Dead' back for its fourth season with the highest-rated episode in the show's history," AMC President Charlie Collier said in a statement Monday. "We could not be more proud of this show and everyone on both sides of the camera who work so hard to give life to this story of character, leadership and survival. It starts with series creator, writer and executive producer Robert Kirkman, show runner and executive producer Scott Gimple and the director of last night's episode -- and the man behind the make-up -- executive producer Greg Nicotero, their fellow executive producers and an extraordinary cast and crew who are giving their all every day. So clearly, thanks to them, the dead have never been more alive."
The previous record for an episode of "The Walking Dead" was 12.4 million total viewers for the Season 3 finale.
"The Walking Dead" stars Andrew Lincoln as Rick Grimes, a former sheriff struggling to maintain order in a new world overrun by the undead.