Worst-Case Scenario is the name of a series of merchandise based on a 1999 book written by Joshua Piven and David Borgenicht and published by Chronicle Books. The series first entry, The Worst-Case Scenario Survival Handbook, sold over 10 million copies worldwide and prompted a series of related books, games, calendars, and two television series. Later works have been published via Quirk Books and have been credited with giving the company enough funding to expand. Source: Wikipedia (en)