Although the twin had different styles with different clothing to make them distinguishable enough but I found it a little tiring to keep making a conscious effort to differentiate between the two. Maybe throwing on some glasses would help or I'm just too lazy. The first episode felt too tame and didn't show enough gripping elements. That scene in the forest at the beginning of episode 2 really sat the overall tone of the drama moving forward. At that point, it was obvious it's going to be the type of show that would waste time on nonsense, fail to deliver the information and dance around aimlessly. I though I would give them the benefit of the doubt; they might deliver on that with clever plays but they never did. Not even the twins element was utilized enough. After about 4 episodes, the drama lost most, if not all, of its engaging elements. The mystery turned into a snoozefest. This was beyond what's considered a slow burner. It took 11 long episodes for something noteworthy to happen. The ending was underwhelming after all that wait and they had the audacity to set up some teasers for possible continuation.