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Story summary
- Kali Prasad, known as Eight and played by Linnea Berthelsen, returns in the first third of Stranger Things Season 4.
- Co-creator Matt Duffer says the season's narrative hinges on Kali's involvement.
- Kali has the ability to create mental hallucinations.
- Kali was last seen in Season 2.
- Duffer notes Kali's return resolves a narrative loose end ahead of Stranger Things Volume Two, which premieres December 25, 2025.
