loved the first season but the other seasons kinda ruined it for me. it wasnt s3 that made the drama go down hill but instead the drama went down hill from s2 imo.
s3 indeed was the most intense season out of all but the deaths of mcs didnt do justice. daeho, hyeonju were such great characters but s3 ruined the character of daeho totally and killing hyeoju in ep 2 didnt do justice to her character either.
talking abt the scene that grabbed me the most would probably be the keys and knives episode. it was intense and frustrating at the same time which had me hooked completely. the unexpected duo of namgyu and myunggi did impact me.
my overall ranking of all the seasons would be like: s1>>>s3>s2