The Unexplained Files (2013)

S2E1 The Real Exorcist & Mystery of the Dying Elk

In a groundbreaking revelation, someone who took part in the actual exorcism that served as the inspiration for The Exorcist shares their firsthand account for the very first time. In a puzzling turn of events, more than 100 elk are discovered dead, all having perished within the last day. The reason behind this tragic occurrence remains unknown.