Story:
I loved this drama. The story-line was so good. It was so good that sometimes it gave me anxiety for being so invested in the characters and the story. I think the length of the drama was perfect and most (if not all) of the plot lines were tied up by the end of the show.

Acting/Cast:
They were so beautiful. Seo Ye Ji was perfect for the lead role, I genuinely felt for her character and was super invested in her. Ok Taec Yeon's character was good, not my favorite but he definitely pulled off the role. I'm glad he wasn't your typical rich guy character. Jo Sung Ha was an amazing villain but in my opinion my favorite of the villains was Jo Jae Yun's character.  Jo Jae Yun surprised me this time around, I've seen him a lot in supporting roles but this is one of my favorite of his. Woo Do Hwan stole the show away. In my opinion I liked his character more than Taec Yeon's. Dong Chul (Do Hwan) went through so much and yet still was a good person. Lastly I wanted to talk about Lee David and Park Ji Young. I've only seen him (David) once or twice other than in Save Me and his character was a perfect comic relief but still had a serious side. I'm so glad Ji Young was chosen as one of the cast members, she never fails. She portrayed the character brilliantly.
(Also a shout out to the actors/actresses who played Sang Mi's family, they were amazing!)

Music:
The music was ominous and not annoying like in most dramas. I'm glad the music was like this.

Rewatch Value:
I've already rewatched it once and I'll probably rewatch it again some day. I also got my family to watch it with me and they liked it a lot!

Overall:
I definitely suggest checking this drama out if you haven't already! It's one of the best dramas of 2017. Go watch it!