When Stranger Things Season 5 returned to the screens, people were aware that there would be big twists in the show, but few of them were anticipating that Linnea Berthelsen would make such a huge comeback as Kali or Eight. She is the enigmatic girl with powers like Eleven and her return instantly changed the impetus of the season.Even a core Stranger Things star like Millie Bobby Brown, playing Eleven, was surprised. In a recent interview with IGN, Millie Bobby Brown claimed that when she first heard about the scene and how significant the uncovering would be, she did not believe it. Her initial response was not elaborate or artificial: “I was like, oh my god!” she said.The fact that she was surprised reveals how evasive and dramatic Stranger Things Season 5 is going to be. This is something that was hidden from even the cast members, and Kali’s return at the end of Stranger Things Season 5 Volume 1 is one of the most thrilling surprises fans received in the story to date.The surprise return of Kali in Stranger Things Season 5 and Millie’s genuine shockKali, who was introduced back in Season 2 as the troubled yet strong sisterlike figure to Eleven, had been gone for years from Stranger Things, at least on screen. Therefore, as she unexpectedly came back towards the end of the 4th episode of Stranger Things Season 5 Volume 1, the audience and even Millie Bobby Brown were surprised by it. In the IGN interview, Millie said that she felt actually baffled by the abruptness and dramatic reveal when she first came to know about the scene.I didn’t know that she was coming back, so when I read it I was like, oh my god! Kali! It just felt like that storyline started and never actually got the closure it deserved. So I’m really excited. I think what’s really exciting about the next volume is that she’s back for a reason and it’s pretty impactful.”The showrunners initially did not let anyone know of this, including the key cast, that Kali was coming back. Because of that, the moment felt even more dramatic. As Hopper opens the door Dr. Kay and his team were keeping secret, and Eleven enters to find Kali held captive, it does not seem like a mere throwback, it seems like a twist that will alter everything that is currently occurring in Hawkins. According to Millie, this episode is a reminder of the fact that Stranger Things Season 5 has become highly unpredictable and emotionally charged.What Kali’s return means for Stranger Things Season 5’s storyline and for ElevenStranger Things | Image via: 21 Laps EntertainmentThe decision to bring Kali back in Stranger Things Season 5 is not only for nostalgia, but it is a clever move that makes the final battle between the Hawkins group and the Upside Down more profound. Her return is a way of taking the viewers back to Brenner’s experiments and the trauma experienced by the psychic children.To the audience, this implies that Stranger Things Season 5 will not be about the monsters; it will also touch on the emotional casualties and the unresolved emotional facts of the past.In the case of Eleven, the sight of Kali comes as a great emotional shock. It resorts to the old memories and past errors and doubts that she never confronted. With Stranger Things Season 5 approaching the finale, the reintroduction of Kali implies that there might be an opportunity of reconciliation to the ruptured relationship between the two, perhaps even of restoring it.This revelation is a turning point, both to Eleven and to Millie Bobby Brown. It demonstrates that the stakes in the final season are personal and psychological in the same manner as it is supernatural. The coming back of Kali could make Eleven realise that she had left Kali alone at the end of Season 2 and reevaluate her identity and her power in general. Stranger Things can take advantage of this to provide Eleven with her most profound character experience till date in Season 5, make her confront her past, her suffering and her development as the narrative of Hawkins comes to its end.For more such insights on Stranger Things Season 5, keep following SoapCentral.