When David Borgenicht co-wrote The Worst-Case Scenario Survival Handbook in 1999, he never expected it to sell 10-million copies and inspire two TV shows and 30 spin-off books. But that's what happened. Twenty years later, an updated version of the handbook is out. David joins the show to talk about survival in the 21st century and his mashup-obsessed publishing company Quirk Books, which is behind Pride and Prejudice and Zombies and William Shakespeare's Star Wars.