National Geographic’s Emmy-Nominated docu-series Trafficked with Mariana van Zeller is back for season two with new episodes airing Wednesday nights and later streaming on Hulu. In the series, award-winning journalist Mariana van Zeller explores the inner workings of the global underworld’s most dangerous black markets. In each episode, she journeys inside a different black market or trafficking network — from drugs and stolen cars to outlaw bikers and Amazon mafias — to meet the players, learn the business, and better understand the world’s multitrillion-dollar shadow economy.