Netflix just released a new teaser trailer for “Stranger Things 4”

It seems Dr. Martin Brenner is trying to contact Eleven.

Stranger Things 4‘s new teaser goes back to the beginning by revisiting  Dr. Martin Brenner and Project MKUltra. While this may look like a flashback, it’s also an ominous sign for Eleven’s future. Before she was adopted by Chief Hopper, Dr. Brenner was Eleven’s “Papa.” What will happen??? Season 4 will likely drop in 2022.