I'm kinda in shock over how good this drama turned out to be considering how long I've been avoiding watching it. I knew the ratings were high, but because there were 51 episodes (which is enough to scare me away) it lived forever on my planning to watch cue. My advice is to not let episode-count-a-phobia stop you from watching this AMAZING drama. The impressive cast and the intriguing story make every episode worth watching, and before I knew it I was finished. By the end I even found myself oddly craving more, because I'd grown so attached to the world of "Empress Ki". First, this is definitely one of the best cast ensembles I have ever seen in drama. I admit that I didn't check the cast list at all before watching, so there were so many pleasant surprises as far as actors I've loved in other dramas. Ha Ji Won is one of my favorites ("Secret Garden" being my actual favorite drama of all time). She's the ultimate sweet but bad@ss leading lady, and this character is perfect for even her. The story follows her journey from gender-bending youth to Empress (not a spoiler, so don't worry). She goes through such a range in this story that I was impressed with her from beginning to end. She is matched with Joo Jin Mo, who charmed me in the mediocre drama "Woman with a Suitcase", and super impressive Ji Chang Wook from "Healer" (another favorite of mine). I think each of their performances, and the chemistry between these three characters, were flawless. Jin Mo is perfectly cast as charming and heroic. Chang Wook's character is so emotionally complicated that his performance was one of my favorites of all, and so different than his acting in "Healer". This is the kind of dramatic love story that takes you on an emotional rollercoaster... Flirtation, Mistrust, Passion, Betrayal, Obsession, Loyalty... and they made me believe every moment of it. What I love about all of the characters is that they were so developed, with flaws and vulnerabilities, that it all felt real, even when the plot got outrageous. I get overwhelmed when I think of everyone in the cast who deserves to be mentioned for giving such excellent performances, but I will only mention a few. Jung Woong is so good at playing complicated villains, like the one I loved so much in "I Hear Your Voice". Sometimes he gave me chills he's so good in this. Jun Gook Hwan is also an impressive villain, the kind you sometimes secretly root for just so you can keep watching them be evil. His sons were hotties, but Kim Jung Hyun deserves a special shout out for being the Duracell Bunny of evil... (he kept going and going and going). Baek Jin Hee was so slapable she was perfect. The Empress Dowager frustrated me the most because she was so good at being duplicitous. Kim Ji Han, with his sexy Alan Richman-esque voice, was also a standout for me. But honestly, I could just run down the entire cast list and praise everyone, from the servants, to the soldiers, to the royals. I love the bromances between the heroes, the catty smirks between the ladies, the nail biting fight scenes between almost everyone, even the kids... This is a cast with not only no weak links, but so many memorable performances. As far as the story, it is really hard to keep a drama with so many long episodes interesting, but this drama absolutely does. This is a shakespearean level saeguk, with so many twists it's impossible to see them all coming. I also loved that the the drama starts near the end point, so you see where everything will lead first and then are glued to the screen watching how everything will finally get to that point. It also covers a lot of genres. There's romance, and action, and of course revenge, with even a few supernatural moments. There are also comedic moments, but know that this drama is definitely more tragedy than comedy, and often times frustrating and depressing (in an entertaining way) the further along the story gets. I also like that after being less enthusiastic about some of the middle episodes, the pace starts to pick up again near the end so much that I literally could not stop watching. My critiques of this drama are very few. One is that the circumstances are so unbelievable at times that I almost wanted to laugh inappropriately, but the actors always made the story work no matter how crazy the plot got. Another issue for me was that I was bored by certain parts of the story, towards the middle, although they added to the character development, and made sense to the story as a whole, I was just personally less interested in some of the political rivalries and wars (especially in Wang Yoo's storyline). There are also tropes you find in a lot of dramas, but the storytelling is so engaging that it never feels cliché. As for the ending, I thought it was simple and perfect. The last 2 episodes pack so much in that it was a little overwhelming, but I felt like there were no loose ends at all, and the very last moment kinda ends with a haunting question... at least that's how I interpreted it, which made the whole story complete. Would I watch this again? DEFINITELY! It's now tied for my favorite Saeguk with "The Princess' Man". I'd probably take my time with a rewatch, and enjoy the performances, instead of rushing to finish in order to know what happens. Overall, The characters will haunt me for a while. Every villain was sympathetic, and every hero/heroine pissed me off, which made the power struggles so much more compelling. I love stories like these that make me actually curious about the real people that inspired them. I know very little about the actual history, so I can't reference what is real vs what was made up. I can only assume that there's only a small amount of this story that's based actual events. However, like every good makjang drama, the more unrealistic the better. I definitely recommend this one as a must watch! I was addicted by episode one. It's certainly not a lighthearted drama, so arm yourself with enough tissues, and be ready to curse at the screen, and clutch at your broken heart. Trust the ratings and reviews on this one, it really is THAT good. If you're a big fan of anyone in the cast, you don't want to miss them in this. 51+ hours later I don't think you will regret it. Wow, This drama may have finally cured my episode-count-a-phobia!