Yellowstone fans lose it after another major character is killed off in bombshell plot twist: 'Insane ending!'

Yellowstone fans were left in shock after another major character was killed off on Sunday night in a major plot twist. 

The Season 5B premiere revealed that John Dutton had seemingly committed suicide, though it was later learned that it was actually Sarah Atwood's (Dawn Olivieri) doing, hiring a shadowy company to make the death look like a suicide.

That didn't entirely pan out, as Kayce Dutton (Luke Grimes) paid a visit to the medical examiner, pointing out some things that convinced her it was actually a homicide.

That convinced the authorities to change the death from a suicide to a homicide, which lead to the rather shocking death.

Sarah Atwood was killed by two assassins from the company she hired to kill Dutton, while she was on the phone with Jamie, which had fans simply flabbergasted.