First off, i know this drama is still on going but i thought i should write out a helpful review for those who are uncertain to watch this. i find that most reviews don't really help me so i find my drama's by simply watching the first episode of everything - but we all know this is losing precious time. I gave the STORY a 10 because of it's originality. sure there have been other Kdrama's out there about Aliens (or not) but the drama revolves around so much more than his story. the story is more a slice of life (although a very dramatic life) of an Alien who stumbled on earth and how he copes with it. I love the combination of detective, suspense, romance and humor. It's a very good balance all in all. I, myself am mostly not interested in detective stories because it tends to jsut be so complicated, but trust me, it's really good and not difficult to follow (?^O^?) now for the ACTING and that cast: a well deserved 10. at first i was unsure about the main actress, but she does her role in a very convincing manner. everyone takes their character and gives it extra dimension. the scary people are genuinly scary ass mothertruckers and the serious people .. well they are serious (but you know their all adorable deep inside!). quickly going over the MUSIC and REWATCH VALUE: like all drama's out there they like to have one song they repeat over and over untill your ears bleed and you nearly can't take it anymore. this is about 20% less of that (thank god). the songs change up here and there and the background music sets the atmosphere rather well. i put the rewatch value at 6, this is biased since i don't like the rewatch in the first place since i remember everything that happens, and this annoys me more than you can imagine. however, i think it should be considerably low due to the fact that, hey it's a detective story. if you know who did it, and why and whatnot, you kind of know the entire plot and i can't imagine you going through another 20 episodes of people not knowing what you know. OVERALL. a very enjoyable drama to watch as it has made me laugh tears more than once, (also with the sad scenes mind you because they're so silly) and i can't really point out anything that is terrible with this drama ??´??? hope this helped you further even though it was an immense review!