You are alone in your house and all of a sudden an alarm strikes. It seem as If a warning is happening, you quickly go to the TV and see that a zombie apocalypse is happening? Zombies aren't real though...but you needs to be careful, you grab all the stuff you need and you lock down your house and go downstairs. You hear a lot of banging for 3 hours but it eventually stops.. should you check or stay downstairs?