As reported on Variety, Nielsen estimates that the 90-minute debut became the Number 1-rated cable series launch on record with 10.1 million viewers. That's 6.3 million adults 18-49, passing the previous demo record of AMC's other show Better Call Saul. AMC now has three of the top five cable launches of all time (with Walking Dead ranking fifth).
In both total viewers and those 18-49, Sunday's premiere out-rated all 22 episodes from the first two seasons of The Walking Dead.
Fear will air six episodes in its first season (leading into the season six premiere of The Walking Dead on October 11). It was given a straight-to-series, two season order by AMC earlier this year. Season two is slated for 2016.