It was intriguing from beginning to end. Kim Tae Ri was phenomenal (she really deserves any and all the awards for this role!) as well as Oh Jung Se.
I felt like the story was very interesting and well-executed. I wouldn't say this was horror, more like thriller, but there were moments that were terrifying (I still made sure to watch this during the day!)
Overall, I loved it through and through. There was nothing that made me feel disappointed or underwhelmed. As I said, it was intriguing from beginning to end. This is definitely a bingeable drama. Highly recommend.