This show is great! The pacing is on point and the plot is really interesting. There's tons of twists and turns. I'm really enjoying it a lot. The performances are very good, especially the lead actor Choi Woo-sik who I've been really impressed by. I'm about half-way through the series and it had me hooked right from the beginning with the writing and cinematography, both of which are absolutely superb. It gets intense really quickly and by the end of the first episode you can't help but start up the next one to see what else happens. That feeling is when I know I have stumbled on a great new show. I've watched quite a few K-Drama's recently and this one has really stood out to me and I imagine it's going to have quite a lasting effect by the end, I just love everything about it. Highly recommend giving this one a go, it's got so many good qualities.