This was actually 4.5 stars, but I'd go with 4 instead.
The plot was highly interesting, kept me hooked, and unique according to my own taste. The actors also delivered their roles very well. Cho Rim, Lt. Yeom, and Jae Hee were my faves 🫶
However, there were some parts in the series that were too slow -- it was in episode 14 👀 I was soooo mad 😤
There were also parts that were lacking -- the suspect's background story and his motives for each of his victims, etc. I was also kinda disappointed that Cho Rim's friend didn't get into a relationship until the end of the series.
Despite all that, for me, it was still a worthy drama to watch 🥰 But, I won't be considering to watch it all over again.