You have to strike hard from the beginning and create a depressurizing zone between the viewer's own life and the one onscreen. The creators of James Bond got it right: the attention-grabbing scene of each Bond movie is the very first one, before the opening credits.
Claude LelouchThe perfect crime is when you push someone to suicide. I once read a study that said everyone in the course of their life has thought of killing someone.
Claude Lelouch