Will wanted to go trick or treating himself, so Jonathan took him out and went to the party. He told him he would meet him later that night.
Will had another episode and found himself thrust back into the other side, but Mike pulled him out.
Just before that, Will was bullied by the older kids and he dropped the camera.
Eleven revealed how she escaped the Upside Down and it was because she found an opening in the wall. She stayed outside for months until she found herself in the care of Hopper.
He fixed up an old shack and turned it into a home for the two of them.
Eleven got mad because Hopper did not return early to watch movies and eat candy with her for Halloween, but he was busy finding out what happened to the crop of pumpkins.