Just finished this kdrama and I loved it! If you like kdramas with action, kidnapping, murder, police, investigations, gritty, dark, thriller, and crime then I 100% recommend it to you! And it's only 11 eps! There's a season 2 as well and a season 3 movie!? 9/10 from me. However, if you are 18 and under or sensitive to violent scenes then I wouldn't recommend it to you, as there are many explicit violent fighting scenes with knife crimes and guns. Basically, it's not your average kdrama with a male lead doing taekwondo and finishing up the villains in 10secs, there's more to it. Also, there's no romance, maybe some bromance tho (not bl).