An interesting concept but the drama never really goes anywhere. You're waiting for the real action to unfold but it feels like make-believe because real life criminals aren't as nice, nor do they talk as much as the serial killer in this series. Serial killers are conscience-less psychopaths who take pleasure in human suffering. The killer in this drama is an impulsive old man who likes to give long winded spiels and randomly kill people. Real serial killers typically plan out their crimes in order to avoid being caught. Psychologically tense dramas require realism. This is more like a cheesy soap opera where a "serial killer" label was slapped on this character.
I really liked Park Bo-young in Strong Girl Bong-soon. But I dislike her character here, which falls into the stereotype of the weepy, helpless woman. She makes menacing threats but squeals when the killers slaps her. Also, the hysterical behavior makes you wonder if she really is an experienced, hardened prosecutor.
The episodes got more and more dragged down and I couldn't finish.
