I think the Hong Sisters have never done a second season of their dramas. Also the main problem with a second season is that this drama had terrible problems in production: 1. Edit errors that were later fixed with the apologize to the viewers. 2. A person of the enlighting was tragically in a paraplegic state due to overwork and an accident occurred due to the negligence of one of the producers, that generated a serious conflict that included a work stoppage (a Strike) and the National Union of Media Workers and the Ministry of Employment and Labor were involved. 3. A huge rumor about the actor Cha Seung Won refusing to work for a week because all the problems with the production crew (He tried to support them). - So, yes i think he won't do a season 2 of this drama. 4. To finish on time with the drama TVN had to add another 4 directors so that the scenes were divided and the recordings were faster. Now, all this generated cost overruns to the production, and yes the raitings were too low (5-6%) compared to what they were expecting due to the cost of the total production. PD: Also the Hong Sister were sued for theft of intellectual property by the writer Ttangbyeol (She is the autor of the webnovel Aeyug). But at the end the Hong sisters won the lawsuit. I'm sorry for my bad english ;)
In this drama the two main girls are bland they can be kidnapped or killed easily by the bad one, even tought they are cops! The one that isn't a cop is better than the two of them -.-' which makes no sense. Overall, it was a bit boring and predictable, i struggled to finish the drama. 6.5/10
Now, all this generated cost overruns to the production, and yes the raitings were too low (5-6%) compared to what they were expecting due to the cost of the total production.
PD: Also the Hong Sister were sued for theft of intellectual property by the writer Ttangbyeol (She is the autor of the webnovel Aeyug). But at the end the Hong sisters won the lawsuit.
I'm sorry for my bad english ;)