The world may never run out of scammers, crime rings and traffickers just waiting for every chance they could get to take advantage of people who are made more gullible or vulnerable by their most pressing needs. But for more than two decades now, Peabody-winning investigative journalist Mariana van Zeller has been at the center of investigations that dare to expose these real-life goons and gangsters' nefarious activities, risking life and limb to lift the tight lid on the complex inner workings of smuggling networks around the world. In the 10-part third season of the Emmy-nominated documentary series "Trafficked with Mariana van Zeller," which premieres on National Geogr...Keep on reading: Flipping the coin: Mariana van Zeller’s dark and hopeful insights into trafficking