When a young boy vanishes, a small town uncovers a mystery involving secret experiments, terrifying supernatural forces and one strange little girl. Millie Bobby Brown, Charlie Heaton, Finn Wolfhard, Natalia Dyer, Caleb McLaughlin, Cara Buono, Joe Keery, Gaten Matarazzo, Winona Ryder, Matthew Modine, Noah Schnapp, David Harbour, Priah Ferguson, Dacre Montgomery, Maya Hawke, Shannon Purser, Sean Astin, Sadie Sink, Paul Reiser Added on Netflix 2016-07-16. Youtube Trailer