In the second book about the investigations of Madrid police inspector Elena Blanco, a quiet evening of the Robles family is disturbed by a sudden visit from several police officers. They head straight to sixteen-year-old Daniel's room and find him watching a creepy "reality" show: two guys in balaclavas torturing a tied up girl. Attempts to determine where the broadcast is coming from are unsuccessful. Unable to do anything, everyone watches as the sophisticated torture continues until the death of the victim... Inspector Elena Blanco has long been following the trail of the Purple Network criminal group, which makes money from online broadcasts of brutal torture and brutal murders on the darknet. Even among her colleagues, no one has any idea why this case is especially important to Elena. After all, no one knows that it was the Purple Network that once kidnapped her son Lucas. Perhaps he was one of the killers on the screen.