what is days gone bye by the walking dead?
"Days Gone Bye" is the pilot episode of the television series "The Walking Dead".
Days Gone Bye (The Walking Dead)
"Days Gone Bye" is the pilot episode of the post-apocalyptic horror television series "The Walking Dead". 
wiki:6605676
Days Gone Bye (The Walking Dead) [SEP] Introduction
"Days Gone Bye" is the pilot episode of the post-apocalyptic horror television series "The Walking Dead". It originally aired on AMC in the United States on October 31, 2010. The episode was written and directed by Frank Darabont, the series creator. Robert Kirkman, the creator of the eponymous series of comic books, considered the idea of creating a television show based on the comic series, but did not move forward. Frank Darabont expressed interest in developing the series for television. In January 2010, AMC formally announced that it had ordered a pilot for a possible series adapted from "The Walking Dead" comic book.