I personally really loved the plot of this drama, and I think that its premise is very interesting. Though some may have seen the ending coming, I did not, and I felt that the ending was very satisfactory. I liked the balance of thriller and romance. I also really liked the acting, and I was surprised at idol Park Jin Young's acting ability, as I felt like he conveyed his character's personality well, and the way his character's experiences had affected him. I also felt that the other actors such as Kwon Kim and Kim Da Som did a very good job at conveying their characters' personalities. The OST is also very good, and I found myself listening to it on repeat for days after finishing the drama.

TLDR, I would recommend because of the great plot and the great acting.