Stranger Things season 2 will air in time for Halloween.
“He seems to be seeing images from the Upside Down—the question is whether they’re real or not,” says co-creator Matt Duffer.
Two new characters will also be introduced in the form of brother-sister duo Billy (Dacre Montgomery) and Max (Sadie Sink).
Hopper (David Harbour), meanwhile, is attempting to keep the events of the Upside Down secret from the town in order to protect Joyce and the children.