If fans thought John Dutton III’s death in Yellowstone season 5, part 2 would severely complicate matters, they were in for a massive surprise when Sarah Atwood was murdered in episode 11. The neo-Western drama TV show created by Taylor Sheridan has entered its endgame as it’s reportedly ending after season 5. So, Sheridan and co. are going all out in the final episodes and killing off characters left and right. However, while the audience is (mostly) aware of who is behind John’s death, the mastermind of Sarah’s demise is more of a question mark heading into episode 12.

https://screenrant.com/yellowstone-sarah-killer-theories/