There’re still so many lingering mysteries in this legendary show. Let’s craft some theories about what’s going to happen in the fifth and final season.

Stranger Things creators break down season 5 trailer: First look at Vecna 'rebuilt,' Will's 'full circle' story, and more (exclusive) - https://ew.com/stranger-things-creators-break-down-season-5-trailer-first-look-vecna-exclusive-11839033 

Stranger Things 5 Official Trailer - https://www.youtube.com/watch?v=PssKpzB0Ah0 

Stranger Things 5 First Five Minutes - https://www.youtube.com/watch?v=vhFPHYgILN0