I just finished watching this drama. I must say it's probably the most original and creative story I've seen in any drams I've watched so far. The concept of the parallel time periods and the mystery was really unique for me. It was so great to see a drama that, for me, really stood out against all the others I've watched. It lacked the predictability most dramas have. It was actually exciting to watch because I was never sure what would happen. My only gripe is that the ending seemed a little too rushed but I can still overlook that since I assume they probably had to cram it all in the episode. I'd recommend this drama to everyone. Fantastic!