The premise of the show is great - sci-fi based, with decent acting, production etc... the problem here which seems to infect many such series is that being linear program it is much too long to keep me interested. I mean 62 episodes to solve the mystery and find the truth is not for me... more recent Korean series have been much more appropriate with 7-9 episodes, or Stand alone series like xfiles, Star Trek etc... unfortunately, not willing to waste 62 episodes to solve this single mystery and will need to give it a miss at episode 4...