The Walking Dead emerged from the loss of Frank Darabont and rumored budget cuts to shatter cable rating records. But how it achieved that involved a stellar business model for staying true to company vision, while engaging staff and customers in the end product. Show producers Glen Mazzara, Greg Nicotero, Robert Kirkman, and Gale Anne Hurd and stars Steve Yeun, Norman Reedus, and Melissa McBride talk about the resurrection of the Dead.