Through the Darkness is a crime drama that is particularly unique for being adapted from the book of Korea’s first profiler. In this sense, it isn’t only focused on the crimes, but more so on the work that goes into solving them. It managed to capture the struggles of, at the time, still developing field of crime profiling.

Not every aspect of this show is actually based on real happenings, but the characters and their stories make the viewer feel more included. It doesn't strack you as fiction or merely distant reality, it rather showcases itself as the everyday reality we face.

As for the acting, there isn’t anything I can criticise. Kim Nam Gil did an extraordinary job and his acting performance is memorable. This can be said about all the other characters, too. It isn’t quite common to see actors portray serial murders this well.

This drama was not the fastest watch (though it was rather intense), but it would feel wrong if such stories were easy to watch. That’s, of course, something one has to account for. On that note, I would argue that the rewatch value may not be the highest, which in this case is not a drawback.