Timothy Treadwell, tireless and passionate advocate for grizzly bears, was killed in October 2003 by the beast he so fervently adored and tried to protect. His remains, along with those of his girlfriend, Amie Huguenard, were discovered near their campsite in Alaska's Katmai National Park and Preserve. They had been mauled and devoured by a grizzly, the first known victims of a bear attack in the park. The bear suspected of the killings was later shot by park officials. Director Werner Herzog's film uses Treadwell's own startling documentary footage to paint a nuanced portrait of this complex and compelling figure...