Mariana van Zeller is not known to be easily nervous or scared, but season 4 of Trafficked: Underworlds tested her limits! Get an inside look as Mariana van Zeller reacts to the most intense moments in the field while filming season 4 Check out full episodes of Trafficked: Underworlds With Mariana van Zeller on Disney+ https://www.disneyplus.com/browse/entity-71a6bd85-a944-4d1a-ad06-cc4449fa3b54?cid=DTCI-Synergy-NatGeoPartners-YT-Acquisition-Library-GLOBAL-NatGeo-TraffickedwithMariannaVanZeller-EN-Youtube-NatGeo_Brand_YT_TWMVZ-NA Enjoy a free trial of National Geographic right here: https://ngmdomsubs.nationalgeographic.com/servlet/OrdersGateway?cds_mag_code=NG9&cds_page_id= ➡ Subscribe: http://bit.ly/NatGeoSubscribe And check out more National Geographic series and specials here: ➡ Disney Plus: https://on.natgeo.com/3q6on5p ➡ Hulu: https://on.natgeo.com/3Qor0Ko ➡ NGTV app: https://www.nationalgeographic.com/tv/ ➡ ABC app: https://abc.com/ About Trafficked with Mariana van Zeller: TRAFFICKED with Mariana van Zeller is an original documentary series that explores the complex and dangerous inner-workings of the global underworld, black and informal markets. Each adventure follows Mariana on a mission to follow the chain of custody of trafficked goods, understand how to obtain the contraband, or see the 360-degree view of the trafficking world from the point of view of the smugglers, law enforcement and those caught in the crossfire. #NationalGeographic #TraffickedWithMarianaVanZeller About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible. Get More National Geographic: Official Site: http://bit.ly/NatGeoOfficialSite Facebook: http://bit.ly/FBNatGeo Twitter: http://bit.ly/NatGeoTwitter Instagram: http://bit.ly/NatGeoInsta TikTok: http://www.tiktok.com/@natgeo Tenor: http://on.natgeo.com/31b3Koc Investigative Journalist Mariana van Zeller Reacts to Fan Comments | National Geographic https://www.youtube.com/watch?v=YwDE6osPLcM National Geographic null