Please! How does this series end?

My subscription to the movie channel was terminated before I had a chance to see the final episode(s). I last one I watched was where Shoemaker had made it into Seattle. Can someone PLEASE tell me how the series ends? I don't care that this will spoil it, since I think there's probably only 1 or 2 episodes left in the series anyways.

What is the big secret? What caused most of the people to disappear? What actually caused the "downfall of technology"?

Thanks in advance.