How the story unfolded kept you in suspense but didn't make you feel annoyed as if it was being dragged out. The reveals were purposeful and linear so that each preceding mystery to unravel felt appropriate.

Let's just say that this cast and the acting was definitely topnotch. Some of the best K-Drama acting you could find.

When new characters were added to the mix, they played a key role but not meant to distract or cause chaos to generate false intensity. The intensity always stayed on the core plot and didn't divert into any secondary stories, or triangles, or just plain stupid people doing stupid things, that you see in lazy writing. This writer had a story they wanted to tell and they told it well.

For a story about people lacking in emotions, there were far more emotions than you get in drama plots meant to be tearjerkers.

Lastly, the writer really did want to give a statement on the state of humanity with its gossip, quick judgments, misconceptions, and the influence of social media with its group think, and cancel culture tactics. How good people are driven to do certain things because they know this dynamic and want to avoid it at all costs. Topping this aura out with the mistrust and maltreatment of people who have mental health issues based in circumstances and genetics completely outside their own control and the unfairness of it all.

I really truly appreciate that the writer made these cases in the drama without wielding a heavy hammer in doing so. They were blunt yet sophisticated in their subtlety as well that you could choose to take this drama at face value or open the message within in it. This way, you attract the respect of more viewers with differing POVs. Well done by the writer. I'm certainly impressed.