I had an issue with Seo-Bi's decision making (SPOILER!)
Cho Hak Joo had gotten bit, but she decided to save him? I know that's her job is to save lives, and plus she had a chance to possibility learn more about the virus, but she knew how ruthless Cho was and had an opportunity to rid themselves of a very cruel enemy.
Not that it made much difference anyway I guess. His bitch of a daughter saw to his demise soon afterwards.
Incredible show. Crossing my fingers for a season 3...…….