This movie is really great. the plot is written very well. For those who said that this movie is unrealistic, how do you know it's not real? maybe some people has been through this situation where people don't hear what they say and make an assumption that the killer is somewhat your brother or father. and for the police who need to make decision whether his sister or that lady, if in real life the police also probably be scared and want to save both but who didn't want to save their own siblings. some even said that this movie is non-sense. OMG this is a freaking movie and even it's not happening to you, maybe it's already happened to everyone else. you don't know their stories. there's this one person said that the leading lady wasted so much time sign in front of people that can't understand signing and she could've just type in the phone. um excuse me, maybe she's VERYY scared.. do you think she's calm enough to take out her phone and type everything. and even said hopeless movie, hopeless cop, hopeless citizen !? YES THAT'S RIGHT BECAUSE THIS MOVIE WANT TO TEACH US IF YOU EVER SEE THIS SITUATION HAPPENS IN REAL LIFE, you should help that person. YOU GUYS THAT GIVE 1 STAR, IS TRULY DOESN'T UNDERSTAND THE MEANING OF THIS MOVIE. EVEN IF SOME SAID THERE'S NO MEANING, YOU NEED TO SEARCH BY YOURSELF THE MEANING !! try understand more. the frustration of the lady because she can't speak. the author shown a mean world so that we can take a lesson and don't be like them .. overall both chemistry is great and I hope they have romance drama together ???