Knock is excellent movie from 2017. Knock is a 10/10 movie for me. The hollywood, cannot boast with a large number of better movies. Anyway, this genre may boast of one of the larger number of titles. Lorraine Lévy's work is very characteristic. He is a director who creates a climate in his productions, which is his trademark. You can watch it online here on and add your own subtitles if you are not native english speaker.