Her character is vital in figuring out what actually happened to John Dutton Vinessa Shaw attends "12 Mighty Orphans" New York premiere (Photo by John Lamparski/Getty Images) Note: The following story contains spoilers from “Yellowstone” Season 5, Episode 1. “Yellowstone” viewers were treated to a familiar face on Sunday night. If you’re wondering who played the medical examiner in “Three Fifty-Three,” you’re not alone. Here’s what you need to know about Vinessa Shaw and her connection to “