When public radio reporter Anna King first heard that ranchers in remote areas of rural Oregon were finding the bodies of cows and bulls drained of blood and mutilated, she immediately began to investigate. What she found could have provided the script for an episode of "The X Files." Various arms of law enforcement had investigated this phenomenon, but the mystery remained unsolved. The NPR story she filed in 2019 drew more than a million hits.

She ultimately teamed up with two New York-based documentary filmmakers, Jackson Devereux and Lachlan Hinton, who found the story compelling and wanted to collaborate with her to explore a full-length feature film. After an intense three years of research, interviews, filming and editing, “Not One Drop of Blood” premiers at the Treefort Festival in Idaho this week. King joins to tell us more about what the documentary reveals about the bizarre and as yet unexplained phenomenon.