Okay so I have this awesome book series idea about a family who gets separated due to an unexpected apocalypse. I'm having trouble figuring out what the apocalypse is, but the story focuses on where the characters end up after the events of the apocalypse and on their individual story lines. Can I have any help on what a good title for this can be and how the apocalypse all started? NOTE: I already tried a zombie apocalypse, but that related to The Walking Dead and their new spin-off series Fear The Walking Dead.