It's bad, it's so bad I feel like Netflix is paying google large sums of money to take down bad reviews. By episode 3, you realized that someone could have stopped this whole zombie thing by episode 2, and they even admitted it without a reason why the just didn't do that in the first place. It's amazing how highly reviewed this series is. It's either everyone's bar is set so low now for entertainment, or Netflix is paying a lot of cash to take down poor reviews. I'll admit that this really could have been an amazing series, there were a lot great elements to this show, but there was a lot of bad writing and/or directing decisions that make this unbearable to watch. Read the bad reviews, they are spot on. This needed to be straight up action/horror and without the k-drama elements.