'' The Devil We Know '' is a 2018 investigative documentary film by director Stephanie Soechtig regarding allegations of health hazards from Teflon , and the DuPont corporation 's potential responsibility . The film premiered at the 2018 Sundance Film Festival . The director , Soechtig , has also produced similar documentary exposés including '' Tapped ( 2009 ) , about the pollution caused by bottled water , '' Fed Up '' ( 2014 ) , dealing with the obesity-promoting food industry , and '' Under the Gun '' ( 2016 ) , about the gun lobby
2018 Sundance Film Festival
2018 Sundance Film Festival
The Devil We Know