Season one was great. Really one of the best things I had seen in a long time. After it turned out that people loved it, Netflix made another season. The first season was made because the people who made it had a really great story to tell. The second season was made, not to tell a story, but to cash in. So it was boring, there was no suspense, it was just a bad copy of the first season. The third season was just ridiculous. There were a whole lot of things that annoyed me about it, but what was the most unbelievable is that two grown adults would make the time to fight with each other every step of the way, instead of just saving their children, and not trying to get killed themselves. I stopped watching halfway the final episode of season 3, because it was just too boring. I will not be watching season 4, because I don't want to continue ruining the experience I had watching season 1.