“Mad Max” is the first episode of the second season and the ninth of Stranger Things. As the town prepares for Halloween, a high-scoring rival shakes things up in the arcade, and a skeptical Hopper inspects a field of rotting pumpkins.
“Trick or Treat, Freak” is the second episode of the second season and the tenth of Stranger Things. After Will sees something terrible on trick-or-treat night, Mike wonders if Eleven is still out there. Nancy wrestles with the truth about Barb.
“The Pollywog” is the third episode of the second season and the eleventh of Stranger Things. Dustin adopts a strange new pet, and Eleven grows increasingly impatient. A well-meaning Bob urges Will to stand up to his fears.
“Will the Wise” is the fourth episode of the second season and the twelfth of Stranger Things. An ailing Will opens up to Joyce with disturbing results. While Hopper digs for the truth, Eleven unearths a surprising discovery.
“Dig Dug” is the fifth episode of the second season and the thirteenth of Stranger Things. Nancy and Jonathan swap conspiracy theories with a new ally as Eleven searches for someone from her past. "Bob the Brain" tackles a difficult problem.
“The Spy” is the sixth episode of the second season and the fourteenth of Stranger Things. Will's connection to a shadow evil grows stronger, but no one is quite sure how to stop it. Elsewhere, Dustin and Steve forge an unlikely bond.
“The Lost Sister” is the seventh episode of the second season and the fifteenth of Stranger Things. Psychic visions draw Eleven to a band of violent outcasts and an angry girl with a shadowy past.
“The Mind Flayer” is the eighth episode of the second season and the sixteenth of Stranger Things. An unlikely hero steps forward when a deadly development puts the Hawkins Lab on lockdown, trapping Will and several others inside.
“The Gate” is the ninth and last episode of the second season and the seventeenth episode of Stranger Things. Eleven makes plans to finish what she started while the survivors turn up the heat on the monstrous force that’s holding Will hostage.