AMC said Monday it renewed its zombie-apocalypse epic "The Walking Dead" for a 10th season. The cable network announced the news on Twitter, with a brief video featuring The Whisperers -- human villains who wear grisly disguises to blend in with the undead. "Season 10. October, " they hiss in the clip. Starring Norman Reedus, Danai Gurira and Melissa McBride, the second half of Season 9 of "The Walking Dead" is due to premiere Sunday. The first half saw the departure of Andrew Lincoln's Rick Grimes, the beloved leader of the band of survivors the show has followed since it began. Lincoln is set to reprise the role in several "The Walking Dead" TV movies.