I really enjoyed the suspense going on in this drama, overall it was extremely engaging to know the end of the drama.The mystery and plot of this drama is seriously very intriguing. I could never find any other drama with such amazing plot. Some scenes were taken in Singapore and I found it extremely fascinating to see how the plot is able to be unraveled in another country. I definitely would recommend this drama if you're a fan of mystery/suspense since the plot is so far the best I ever heard of. OST was also very good!! The main leads acting was so good! Their expressions in this show were really great :)