This is the first show since Game of Thrones that made me want to figure out where the plot was going next. It is at this point that I have to say that this ended a million times better than GoT did. The complex and engaging storytelling feat they pulled off in 16 episodes is impressive. This is a drama that combined parallel worlds, doppelgangers, time travel, and fantasy and made it work. The actors including all the supporting actors; absolutely nailed their characters. Woo Do Hwan deserves a special shout-out for his memorable and iconic scene-stealing antics. The leads Kim Go Eun and Lee Min Ho have undeniable chemistry. I am looking forward to rewatching this drama again.