This is a completely fictional plot but with some realism: psychopathic genes. Should we abort babies with this gene or let them live? This ignores the nature vs nurture concept.

The beginning episodes starts off so strong, and so melo. We have a bunch of sad characters with a sad lore in this drama. I liked when it was focused on one case: the Moojin Serial Cases. I was into it, it was a little over the top alongside the broadcasting news show, but it was intense.

Then, it went downhill from there, when the writers started adding other cases and info on top, and the lines start to blur. There started being more harder to believe scenes. The show does a lot of cutting, and then going back to the scene later on to reveal a bigger picture, which is an unique directing style, but can be confusing for viewers like me.

Choi Hong Joo is the most unlikeable character in this show. She's literally in everyone's business and holds all the clues, but she doesn't reveal anything.

Despite the complicated plot that went a little all over the place in the rush to the end, the cast played an pivotal role in drawing me in to keep watching. And the kid actors!! There were so many.