` ` The Walking Dead 's '' season two premiere attracted 2 viewers . It was already the the most successful basic cable drama of all time in the adult demo . Last night 's was up more than 50 percent from third season .
`` The Walking Dead 's '' third season premiere attracted 10.9 million viewers . It was already the the most successful basic cable drama of all time in the adult demo . Last night was up more than 50 percent from season two .