02/05/2013 01:29 pm ET

'The Walking Dead' Creative Differences Led To Glen Mazzara's Exit

It came as a shock when news broke that Glen Mazzara was leaving his post as showrunner of "The Walking Dead." Under Mazzara’s watch the zombie drama set record ratings, and he’d been credited with orchestrating a creative turnaround after the departure of original showrunner Frank Darabont; at least one report suggested that the split was forced when his vision strayed too far from Robert Kirkman’s, the author of the comic and an executive producer on the show.