Stranger Things fans have noticed that the name of a main cast member is not being listed as appearing in the forthcoming season.
Find everything you need to know about Stranger Things season four here.
A spanner has been truly thrown in the works following the revelation that IMDb is no longer listing Harbour as appearing in season four, though.
With the fourth season currently filming, fans have been hoping for the return of David Harbour‘s Jim Hopper, the police chief of Hawkins, Indiana, who seemingly died in the season three finale.