‘Stranger Things’ comes to an end when the final, two-hour finale hits Netflix and theaters on Dec. 31. Vol. 1 and 2 are streaming now. Millie Bobby Brown, Jamie Campbell Bower, David Harbour, Noah Schnapp, Finn Wolfhard, Caleb McLaughlin, Sadie Sink, Gaten Matarazzo, Joe Keery, Maya Hawke, Charlie Heaton, Winona Ryder, Natalia Dyer and more star.