In Book 1 of this series, "Final Dawn", we met Hannah and Mark. She was a brilliant scientist, working for a NASA contractor. He was a successful engineer and a bit of a cornball. Together they made the perfect pair. They were a young couple in love, and looking forward to a bright future. Everything changed the day Hannah found out the world was doomed. She discovered a meteorite headed for earth that would wipe out most of mankind. The United States...