This is a really good thriller! The very fact that it featured a deaf witness make this a very unique story.

Being targeted by a serial killer who chooses his victims at random and kill without any reason was a scary scenario normally. Even more when you have a disability that may hinder you to seek help or even to protect yourself. Which is why the situation in the movie was scary.

I have to say that I really applaud Jin Kijoo in acting as a deaf person in this movie. Her acting, as well as the actress who played as her mother were really good at bringing out the tense situation on being targeted by a killer while having a great disadvantage of not being able to hear your suroundings as well as not being able to speak clearly.