"I believe that the person behind this series of crimes was someone who frequented and hung out in the same circles where the investigative decisions were made, because he had the power to challenge a whole series of individuals in a scientific manner throughout this story, as if he were always one step ahead of the investigations, which he probably knew about or had the opportunity to intuit, perhaps not in such a distinctive way but perhaps through ' intelligence' gathered through individuals in various capacities and at various levels, perhaps against their will, belonging to investigative circles."