Andrew Lincoln's zombie drama has been recommissioned - after just two episodes of the first series were aired in the US.
The Walking Dead, which is being shown in the UK on the FX channel, premiered in the States on the AMC network on Halloween night and drew 5.3 million viewers.
The second episode was seen by 4.7 million viewers.
Set in the Atlanta area, The Walking Dead stars Andrew as a small-town police officer leading a group of survivors after a zombie apocalypse. It is based on the comic book series written by Robert Kirkman.
The Walking Dead takes its place as AMC's fourth original drama series, joining veteran dramas Mad Men and Breaking Bad.
The fate of Rubicon, which recently concluded its first season, remains unclear.