This drama wants to give an important lesson - In case of grave situations, will you choose yourself or your loved one? In the recent self-centered world, there are people who still choose to sacrifice themselves to protect their loved ones. And our leads are one of them.

This drama had good concept, very good cast and different vibes from other horror dramas. But unfortunately it did not deliver properly because of LACK of required content after airing half-way through. It started off as very FAST-paced and engaging, but soon it became dragged and went in circles and circles. There was nothing to keep you look forward to next episode. But last episode finished on pretty good note.
I wish they give another chance and make a season 2 with good story with the same cast.

The acting is great. Daniel kept his worth as ghost detective Da il. He is clever and deeply cares about the people around him. Eun bin is a good actress. Yeo wool was convincing. Both leads had painful past revolving around their family and so they understand each other. They had GOOD chemistry together but couldn't be explored more as it isn't in the story. But whatever time they had together, it was good. The bond between them was very different, more of two humans who shared SAME VALUES together.
Ji ah is really scary as Sunwoo hye. Killing people while sucking on a lolly-pop. she was an UNIQUE antagonist. She is smart and more powerful than the leads. Of course, little Sunwoo hye (Heo Jung Eun) is more scary. She made me cry in Oh My Geum bi! and here she is scary as hell.. Bravo to little actress!

This drama would have been better if there were only 10-12 episodes instead of standard 16 episodes. Just because of insisting the certain number of episodes, they ruined a very good drama. but the last episode was definitely saver.

Music is good. Some OSTs are memorable. Background score gives you goosebumps in some cases specially in Ji ah 's scenes.

Definitely NOT a rewatch.