Wolves from Yellowstone's Druid pack chase down elk in the NATURE film In the Valley of the Wolves, premiering on PBS Sunday, November 4 at 8 p.m. (check local listings). Shot in HD over three years, the film captures the Druids as they battle a rival pack for control of Yellowstone's Lamar Valley and shows the interdependence of the valley's diverse wildlife. Academy Award-winning actor F. Murray Abraham narrates. Part of the 26th season of NATURE, the Peabody and Emmy award-winning series produced by Thirteen/WNET New York for PBS. Major corporate support provided by Canon U.S.A. Inc. and Toyota. For more information, visit http://www.pbs.org/wnet/nature/wolves/