'Stranger Things' 4 Spoilers: Sadie Sink on Max's 'Vulnerable' Journey and Kate Bush (Exclusive)

etonline.com:

’ long-awaited return with season 4, Natalia Dyer teased to ET that everyone was in “real, real danger.” And now that episodes are streaming on Netflix, we know that she wasn’t lying.

While the gang is facing peril on multiple fronts, back in Hawkins, Indiana, Max (Sadie Sink) is still reeling from the death of her stepbrother Billy (Dacre Montgomery) and suddenly finds herself a target of the Upside Down.

And for Max, things come to a head in episode four, “Chapter Four: Dear Billy,” when she finds herself facing the last days of her life. “Max’s journey this season really is just a lot because she is in a lot of pain and she’s grieving,” Sink says, referring to the fact that from episode one, Max has grown despondent in the wake of Billy’s death at the Starcourt mall.As a result, she’s become what Lucas (Caleb McLaughlin) calls a “ghost” and has isolated herself from her group of friends.

The one solace she does seem to have is Kate Bush’s “Running Up That Hill,” a song she listens to on repeat on her headphones. “She’s having all these really dark thoughts that she doesn’t want anyone to find out about,” Sink says. “And then all of a sudden, the very thing she wants to hide the most is what this villain is feeding off of.” That villain she’s referring to is Vecna, aka the “Undying King,” which has been haunting residents of Hawkins all season, first killing off Chrissy (Grace Van Dien) and then Fred (Logan Riley Bruner).