The return of AMC's "The Walking Dead" last Sunday didn't just slay the networks, it killed Zac Efron's TV legacy too.
While we already heard the overnight ratings early last week, the Live+Three numbers are now in with the fourth season premiere's overall viewership jumping by a further four million viewers to an audience of 20.2 million.
That makes it the most-watched non-sports broadcast in cable history, two million viewers ahead of the previous Live+Three record holder - the Efron-led Disney Channel telemovie "High School Musical 2" which has held the record since it premiered in 2007.
In Live+3, "Walking Dead" scored an additional 2.8 million viewers in the key demo - rising to a 10.6 rating and 13.2 million viewers in that demo alone.
The true final count of the episode's viewership, the Live+Seven numbers which take into account a full week of DVR usage, should be announced over the next few days.
Source: The Live Feed