A show full of shocks & plot twists. I got goosebumps in several scenes. This show didn't really had any mystery as whatever was happening was shown to us viewers but the way of getting revenge & countless plot twists made me clap. This show was nerve wrecking, provoking & satisfying. But, there're several scenes that (I think) the makers wanted to make dramatic but it just lost it's sense. Some scenes ignored reality & were streched too much. Some of the actors acting was non-convincing & fake but most of the actors nailed it. Especially, Cheon Seo Jin's actress was the best. I hated her character & loved her actress. This show is definitely worth watching. It's story will get on your nerves but also will shock & satisfy you. I loved it. There should be more shows like this.