The drama is good right at the start it gives the viewer mysteries and question of what happen earlier on but unfortunately loss it momentum right to the end where they focus too much on the love triangle romance thing. I think it going great especially when the return of Eun Byull but it lost it plot in the final 2 episode. The main factor that keep me going is the relationship between Eun Bi-So Young and Eun Byul-the girl who pass away (sorry couldn't recall her name), and also the twin Eun Bi-Byul. The ending was so-so and felt bad for Eun Byul as if she lost everything to Eun Bi. The OST is awesome all the total 8 track is magnificent. The OST alone I would give a full 10/10 and the plot a 8/10 All the cast did a good job especially So Hyun she portray both character convincingly