Note to listeners • This episode contains spoilers for “American Primeval.”

It’s bleak. It’s bloody. It’s barbaric. It’s also the No. 1 TV show on Netflix. But what millions of viewers may misunderstand about “American Primeval” is that it is fictional.

While the six-part series is centered around real places, a few real events and some real people — ranging from the Utah War and the Mountain Meadows Massacre to mountain man Jim Bridger and pioneer-prophet Brigham Young, the show is not a docudrama. It gets many historical facts “wrong,” though the filmmakers weren’t necessarily trying to get everything “right.”

Did, for instance, any Latter-day Saints die in the Mountain Meadows Massacre carried out by Mormon militiamen? Did Native tribes participate in the atrocity? Did Brigham Young order the massacre? Did Latter-day Saints torch Fort Bridger? And are the portrayals of Young, Bridger and various Native American tribes accurate?

Answering those questions and more are Barbara Jones Brown, director of Signature Books and co-author of the critically acclaimed “Vengeance Is Mine: The Mountain Meadows Massacre and Its Aftermath,” and Darren Parry, former chair of the Northwestern Band of the Shoshone Nation and author of “The Bear River Massacre: A Shoshone History.”