

Owens theorizes that Will's episodes are PTSD brought on by the anniversary of his disappearance. Sam Owens, who has been giving Will routine medical exams ever since his return.

Joyce and Hopper take Will to see the lab's new director, Dr. Mike and Nancy deal with their respective losses of Eleven and Barb, and Will has been experiencing episodes of apparent hallucinations of the Upside Down and an enormous, tentacled shadow monster. Joyce is dating her old high school classmate Bob Newby, Hopper investigates a field of pumpkins mysteriously rotting, and conspiracy theorist Murray Bauman investigates people who sighted Eleven, believing her to be a Russian spy. Maxine "Max" Mayfield, a new girl at school, captures the boys' attention. In Hawkins, Indiana, the town prepares for Halloween. On October 28, 1984, a girl with the psychic power to make people see things and with a tattoo reading "008" on her arm is part of a criminal gang that manages to rob a bank and get away in Pittsburgh, Pennsylvania. See also: List of Stranger Things episodes No. Will's family and friends alongside Jim Hopper, Mike's sister Nancy, Nancy's boyfriend Steve Harrington, Californian newcomer Max Mayfield and a missing Eleven, must join forces to contain the threat. In the fall of 1984, one year after his disappearance, Will Byers finds himself the target of the Upside Down as a large tentacled entity called the Mind Flayer terrorizes the citizens of Hawkins and possesses him. The season received highly positive reviews, particularly for its story, character development, production values, visual effects, acting, and darker tone compared to the previous season. Brett Gelman, Linnea Berthelsen, Matthew Modine, and Priah Ferguson also appear in recurring roles. This season stars Winona Ryder, David Harbour, Finn Wolfhard, Millie Bobby Brown, Gaten Matarazzo, Caleb McLaughlin, Noah Schnapp, Sadie Sink, Natalia Dyer, Charlie Heaton, Joe Keery, Dacre Montgomery, Cara Buono, Sean Astin and Paul Reiser. The series was created by the Duffer Brothers, who also serve as executive producers along with Shawn Levy, Dan Cohen and Iain Paterson.

The second season of the American science fiction horror drama television series Stranger Things, was released worldwide on the streaming service Netflix on October 27, 2017.
