Winona Ryder, David Harbour, Millie Bobby Brown, Sadie Sink, Finn Wolfhard, Caleb McLaughlin, Gaten Matarazzo, Noah Schnapp, Natalia Dyer, Charlie Heaton, Joe Keery, Maya Hawke, Cara Buono, Brett Gelman, Linda Hamilton, Nell Fisher, Grace Van Dien, Shannon Purser, Matthew Modine seen at Netflix for Movie Premier