Wow, one of the best thrillers I have seen! It's an exciting ride that will have you on the edge of your seat throughout the entire series! I liked everything about this drama - it's short enough to marathon in one day if you want to ;) Watch it - you won't be disappointed! Cast: Cha U Jin - a righteous prosecutor who has erased a painful memory from 15yrs ago when his former girlfriend died. He meets Eun Bi who is nothing like his girlfriend besides the fact that she looks exactly like her. When he meets her events keep happening that bring him back to the case of his dead girlfriend - what really happened and why did she die? Who is this person called X? Eun Bi - a head-strong and very willful rebellious teenager - she meets Cha U Jin and his partners and starts to change. The prosecutor team were wonderful supporting characters - who devote their time and trust to Cha U Jin. Music: I only know one song sung by the leading actress I believe. It was pretty and went well with the drama but isn't something I'd listen to outside of this drama. Re-watch Value: 8/10 - I'll be picking this up again someday - it's a great watch! I'd write more but then I'd be spoiling things for you. ;)