I was a fan of Korean Drama. I was curious about this series and watched it, it was good but on episode 5 last part I was confused and leav blank because of what happened next during the helicopter scene where Irang and Dongsoo was on the rooftop. I thought it will explain on episode 6 but on episode 6 it was all about from the previous incidents on the story. I know, it shows how it happened but on the last part where Z was murdered it was like boring and giving the viewers a questionable thought. Like, whats the next of it? Is that all? I thought they will let us see how or what happened next on the helicopter scene after seeing the vision of murdering Mr. Z. The series was good and also how Jung Haein portrayed it but, the episode 5 and 6 was really confusing. I also hoped there would be a Season 2 explaining how it is since the pharmaceutical is still on question.