So this started out GREAT! The first like 10 episodes were super interesting and I was so hooked, I couldn't go to sleep without knowing what would happen next. But sadly, the quality of the show declined.

I understand why this has such great ratings. The plot is one of a kind, Lee Jong Suk's acting abilities in this one are on point and honestly, it's super thrilling! BUT BUT BUT after a while the plot just keeps repeating itself. Sure, there is some logic behind all of it but having the same characters die and come back to life 3 or 4 times really gets old. There were so many points at which I thought "NOW would be a great time to end it" but no, they kept going by making a character we thought was dead/gone reappear for the hundreds time...

The female lead was also a big problem for me. Her personality was... non-existent. I couldn't tell you ANYTHING about her other than that she is in love with Kang Chul and that she is a doctor (which she forgets throughout the show by the way, because she never goes back to work lol)

All I can say in conclusion is that the plot is very interesting and I really wanted to know how this show would end, which is why I kept going even after the numerous twists became very old. Would I still recommend to watch this drama? Yes, because I feel like this has become somewhat of a "classic" in the kdrama world and it is one of a kind after all.