MULDER AND SCULLY CONFRONT AN ANCIENT INDIAN LEGEND AS THEY INVESTIGATE A SERIES OF ANIMAL ATTACKS.
Deep in the Montana night, a rancher protecting his stock from a prowling predator shoots it when it attacks his son -- only to discover the naked body of a local Native American man. Tensions between ranchers and Native Americans flare, ripping open old animosities and ancient grudges as Mulder and Scully try to piece together the parts of this mystery. Mulder reveals to Scully that they are investigating the very first -- and still unsolved -- X-File, opened by J. Edgar Hoover himself. What -- or who -- is raiding local stock in so savage a fashion? Can it be the creature of local legend -- stories of a demonic spirit that lives in the woods, possessing the bodies of those who stray too deeply into the forest? Scully suspects the local mountain lion population is to blame, but after Mulder hears a Native American elder's eyewitness account, he is not so sure she is right. His suspicions confirmed by a victim's blood test, he races to save Scully, who is trapped in a dark house with a powerful killer.