This is one of those dramas that I thought I would love, then suddenly lost interest. I'm not sure when I lost interest exactly, but I know that I went from eagerly awaiting new episodes to forgetting that it was still airing. For me, I think this is a case of mostly great story, not so great cast.

The plot involves seeing the future in your dreams, which is not a new kdrama concept, but I liked the way it was executed here. The supernatural thriller aspect of this show was what kept me most interested. I was excited each week to see if the characters would be able to change their fate.  There's also a lot of the plot that involves the characters' backstories, which I also very found interesting. It's not the most exciting or original thriller, but I was entertained. The writer, Park Hye-Ryun, wrote two dramas that I enjoyed with similar styles, "I Hear Your Voice" (one of my favorite villains) and "Pinocchio" (one of my favorite dramas). I think this one doesn't quite measure up in comparison, but in some ways it's kind of a hybrid of the two. "While You Were Sleeping" combines the law and reporting, asks similar questions about morality, and of course adds a supernatural twist in a way that is meant to seem totally plausible and realistic. The most obvious similarity, of course, is that it stars Lee Jong Suk. Maybe they were banking on recapturing past magic with all of these elements, but it still falls a little short.

Lee Jong Suk is fairly consistent. He's got this cool confident swag  thing going on, without being too arrogant, and while being vulnerable enough to maintain his charm.  In this role, however, he is supposed to come off as a little less cool, and it honestly didn't work. He still maintains his charm, but the lighthearted character he was going for still seemed too much like the character he usually plays, just in forced silly situations. I don't think fans of his will be disappointed, or that he does a bad job, it's just that something feels off with this character pretty early on. He of course is matched with Suzy, who I have been neutral about for a long time. She plays eccentric Hong Ju, the real center of this whole drama, but she went from being interesting to too predictable for me in this role. For a character who is supposed to be so headstrong and determined, she was still easily overshadowed by the guys. I honestly don't think she had a strong enough presence for this role.  It also doesn't help that her chemistry with Jong Suk didn't quite work either.  At first they were cute, really cute, but then they were pretty boring and forgettable. Both of their emotional scenes also felt really forced. She seems like an actress that relies on her costar's charm to make the chemistry really work, and since Jong Suk wasn't at his A game, that made her extra mediocre. So fans looking for a good rom com storyline will be pretty underwhelmed.

The rest of the cast is mostly great, especially Jung Hae In and Kim Won Hae. Hae In is a formidable second lead, if the romance portion wasn't so lacking, and really charming. I also love Won Hae's versatility, even though this role is more low key and emotional than I've seen him before, he is clearly a talented actor. Then there's the rest of the ensemble, especially the prosecutors and staff, who were all extremely entertaining, and added a lot to the story to hold my interest. Still, I have to say that I was disappointed by Lee Sang Yeob. He was good at playing arrogant, I will definitely give him that, but as a villain he was pretty boring. On paper his character is duplicitous, charming, and manipulative, but I felt like he was pretty one note in his portrayal. I'm a sucker for a good villain, so maybe I'm being extra hard on him, but I just wasn't impressed.

My rewatch value is obviously pretty low because my desire to even finish was pretty low. The plot is good enough, I think, to warrant a second viewing to see how the pieces fit. It may even be better to just binge watch so you don't have enough time in between to lose interest. I will also add the disclaimer that I was simultaneously watching other on air suspense/thriller dramas at the same time, and this started to pale in comparison, which didn't help.

The OST was pretty "meh" worthy for me. It fit the vibe of the story well, but I have no desire to hear any of these songs again. If I connected to this drama more I would probably like the OST more, but there are plenty of bad shows with soundtracks I love, so maybe not.

Overall, I'd say I'm disappointed based on the strong start, but not mad that I completed it. I would recommend too many other dramas before this one, especially since suspense is a common theme this season, but this isn't terrible, just not great. I wish more questions were answered at the end, instead of going for the standard ending, but I don't have any real major complaints. I would easily recommend this to fans of "I Hear your Voice" and "Pinocchio", with the disclaimer to lower your expectations, and expect some major deja vu.