It is crime physiological fantasy drama about a man who last his loved one,
Oh Hyun-jae (Jang Hyuk) was a genius profiler who cracked many cold cases using his unsurpassed profiling skills. One day, his fiancee was killed in an explosion set by a serial killer and Hyun-jae lived in seclusion after that. Five years later, a new murder takes place using the same method as that serial killer. While investigating the case, team leader Hwang Ha-young (Jin Seo-yeon) meets a detective from the countryside, Cha Soo-young, who has a photographic memory (Choi Soo-young). She introduced Soo-young to Hyun-jae and they work together to go after the serial killer.
Now they both team up to catch the real culprit behind the these murders.

I was so impressed by this drama that I waited patiently everyweek to watch this drama from last one and half months was one of my most exciting months of all time,
This drama has everything from perfect story to perfect cast and the acting of the actors was so amazing that it felt so real and our villian so amazing the way he kill people was so good and brutal by a cycle break wire (awasome).
What ever I need this drama has everything thing,
So I will recommend to everyone whoever is reading this review please watch the drama you will not regert my words I can guarantee you about this.

Peace out
Aniket Yadav
@theaniketyadav