Mystery drama with a back and forth plot, but not confusing, just make you curious, from the beginning the drama makes us wonder why this is like this , why is like that, is he the mastermind or is he the mastermind?, Even though the plot goes back and forth now and in 2018,2017,1991,1995, but the story is pretty clear, just curious,,not twisting brain,,, and actually i already guessed who the killer from the storyline


When I saw them climbing the mountain, all I thought was "aren't they tired?" ,, but they did not disappoint their tiredness, the editing was also quite good, everything should be displayed is shown,, only LYS ..... Where is she?


And the soundtrack Even it's not much, it really gets the point of the feeling,,, mystery ost, and the last eps gugyeong ost