A bourgeois thriller

Two couples, very close friends, wonderful doctors and architects, people who make decisions for others in decisive problems on a daily basis, live a life of prosperity, and everything seems to feel like a paradise to them. The normal coexists with the pathological. Someone wants more. Passion ravages. Sometimes the road to crime is very simple, just a step. Almost inexplicable to many. A clear view of a world, an above average class, with a seemingly successful and happy existence.