Stranger Things 3x6 Chapter Six: E Pluribus Unum Season 3 Season 1 8 EpisodesSeason 2 9 EpisodesSeason 3 8 EpisodesSeason 4 1 Episodes 3x1 - Chapter One: Suzie, Do You Copy? 3x2 - Chapter Two: The Mall Rats 3x3 - Chapter Three: The Case of the Missing Lifeguard 3x4 - Chapter Four: The Sauna Test 3x5 - Chapter Five: The Flayed 3x6 - Chapter Six: E Pluribus Unum 3x7 - Chapter Seven: The Bite 3x8 - Chapter Eight: The Battle of Starcourt Dr. Alexei reveals what the Russians have been building, and Eleven sees where Billy has been. Dustin and Erica stage a daring rescue.