AMC’s The Walking Dead returned last night from its third season break with 12.3 million viewers. The 9 PM midseason premiere is a series high for the zombie apocalypse show. The airing Sunday also pulled in 7.7 million among Adults 18-49. That’s a record for a series in basic cable history and up 6% from the show’s previous high of its October 14 season premiere. In total 16.6 million viewers watched the Dead last night with the 9 PM premiere and the 11 PM, midnight and 2 AM encores on AMC.