I have not finished watching but I had to do the review beforehand. The United States movie "Signal" was nothing like this movie but it had to do with a murder case. This Kdrama and the American movie Signal are both great. The KDrama had more of a story to it which I so appreciate. Lee Je Hoon whose character Park Hae Yeong was very strong and convincing as a profiler. I need to see more with this actor. Kim Hye Soo who played Cha Soo Hyun was also a strong and compassionate emotional female detective, she was also doing a believable job. I will let you know the rest as I finish watching it. I have not skipped any episodes because it has me focused on them. Now the bad part.

Important: I always research the actor's main lead and support.