Ghost is not a NEW word in detective genre, but, no denying, it's an outstanding drama. So modern and actual that I began feeling fear. If you are not a genius hacker Hades, you can't be sure that nobody is watching you or stealing your personal information. One click - all our beloved and vital gadgets are hacked. Smartphone or car control, small firm or national government, it doesn't matter. Spooky, isn't it? Idea of the show is GOOD, a lot. What about realization... plot is captivating, you are hooked and so on, but some things were a bit annoying. First, have they heard of fingerprints or DNA? Lots of such silly details ruined the credibility. Second, too much episodes in general (i'd stopped on 16) and two much series devoted to cat-and-mouse between Big Good and Big Bad. For these two years police haven't had any other cases... I wanted to see them. Like two eps about suicides in high school. They were great and very korean, where teens' suicides is an urgent question. Third, lack of flashbacks about Hades (which I suppose, could be very interesting) and lots of annoying flashbacks which were on non-stop repeat. Some parts were shown about ten times in case that you have an amnesia. And last...So Ji Sub is a very talented actor, but I didn't notice much difference between his characters here (If you know, which I mean) What was AWESOME (no comments, just pluses): -OST -tension -unpredictable plot Bitchy Cow and other supporting characters -good final Sum: worth watching in many aspects. Common sense is advised to be not ignored during the process of watching)