“She started screaming,” Ducat explained.

As he carried her off, Ducat said he heard her say, “It hurts.”

Later that night, a search party found Helgeson. She was barely alive. The group carried her back to the chalet, where a surgeon, who was one of the guests, tried to save her. She had lost too much blood. A priest, Father Tom Connolly, gave her the sacrament of Last Rites and prayed with her as she died.

Meanwhile, at Trout Creek Campground, about 8 miles away from the chalet, Koons was dragged off by another grizzly bear as her friends escaped by climbing trees. The bear, which had been attracted to the campsite by all the trash previous campers had regularly left, had invaded Koons’s campsite earlier in the evening but returned in the middle of the night.

Among Koons’s friends was Paul Dunn, who coincidentally also had been invited by Helgeson and Ducat to join them on their chalet trip.

“I was meant to be in an experience with a grizzly that night,” Dunn said.

The documentary not only shows the grief of those involved in the tragedy, but also how human behavior contributed to the attacks. Before that night, few realized how dangerous a bear habituated to the presence of humans can be.