First and second seasons were good but moved slowly enough for me to give my initial rating of this an 8. However like one of the reviews I read on this site said well is from the get-go this show has a very anemic explanation of how the world came to be in the show. But season 3 is a complete disaster. Too bad shows like this continue on when they shouldn't. 7 episodes of nothing in season 3 makes you wonder how these producers can scam their audience like this. If you don't have any story pack it in.