This season really did deliver more than what i was waiting for. I was skeptical about the change of Yoo ah-in because of his important role. But Kim Sung Cheol did a great job. The whole show did not disapoint me in any way. They are certainly some points that i wished to be added like the origin of the monster (which i think we got a glimpse of it from jinsu's death) and why was all of this hapening, but not everythings needs answer. It's thrilling that way. From the start i knew we will get little to no informations on those monsters because the drama focused more on the battle struggle of humans believes than knowing the truth or taking mesure against those monsters. The ambiguity added more taste to the show. I Highly doubt there will be a third season. But if there was, I hope they will show us more of the resurrected abilities and if the child is normal or not.