El is talking to Max and tells that she is worried with Billy and Heather. Mrs. Driscoll is taken by the police to a hospital. The Mind Flayer attacks Tom and Janet in the empty factory and turns them into the Flayed. Hopper recovers at Joyce´s house and they head to meet Kline to know the identity of the man that attacked him. Will senses The Mind Flayer and the group of teenagers reunites to discuss the problem without Dustin that is with Steve and Robin spying the Russians. They plot a plan to lock Billy inside the sauna to force the Mind Flayer to leave him. Nancy and Jonathan are fired from The Hawkins Post by Tom Holloway. Robin buys blueprints of the Starcourt Mall to find an access to the restricted rooms. Erica makes a deal with Robin, Steve and Dustin to open the door of the restricted room.
"Chapter Four: The Sauna Test" is so far the best episode of the Third season of "Stranger Things". The episode is full of tension and action and has interesting subplots. My vote is nine.
Title (Brazil): "Chapter Four: The Sauna Test"