What Lies Ahead premiere written and filmed would begin after the events of Season 1, although a brief flashback scene of Shane and Lori witnessing the fall of Atlanta from a distance would appear during the season. At PaleyFest 2011, it was announced that the second season of "The Walking Dead" would mainly be produced outside the city limits of Atlanta, Georgia. Most of the principal photography for "What Lies Ahead" took place in unincorporated Henry County, Georgia on June 5–9, 2011, using a stretch of Georgia State Route 20 that was closed to traffic for the purpose. On June 8, 2011, the
International Standard Book Number on how large the publishing industry is within a country. The initial ISBN configuration of recognition was generated in 1967, based upon the 9-digit Standard Book Numbering (SBN) created in 1966. The 10-digit ISBN format was developed by the International Organization for Standardization (ISO) and was published in 1970 as international standard ISO 2108 (the SBN code can be converted to a ten-digit ISBN by prefixing it with a zero digit "0"). Privately published books sometimes appear without an ISBN. The International ISBN agency sometimes assigns such books ISBNs on its own initiative. Another identifier, the International Standard Serial Number