LOS ANGELES, Dec. 21 (UPI) -- AMC says it has renewed its Georgia-set zombie drama "The Walking Dead" for a fourth season but executive producer Glen Mazzara won't be returning.
"The two parties have mutually decided to part ways," AMC and Mazzara said Friday in a statement to Variety. "Glen guided the series creatively for Seasons 2 and 3. AMC is grateful for his hard work. We are both proud of our shared success.