First Aired: Sep. 20, 2005 on The WB
Summary: Sam and Dean head to Colorado to check out the coordinates that their father left them in his journal. When they arrive, they pose as park rangers to investigate the disappearance of three campers and soon discover that they're up against a Wendigo, a mythical creature from Native American…
Dean Winchester: Well, hell you know I'm in!
Dean Winchester: [pulls out John's journal] This is why. This book. This is Dad's single most valuable possession. Everything he knows about every evil thing is in here. And he's passed it on to us. I think he wants us to pick up where he left off. You know, saving people, hunting things. The family business.
- Goof (errors made by characters, possibly deliberate errors by the filmmakers): When Sam and Dean first introduce themselves to Hailey, Dean says his name is Dean but the name on his ID says Samuel Cole.
- Goof (factual errors): It is stated several times that Grizzly Bears are the cause of several deaths in the area (in Colorado), and a picture of a large dead bear is shown in the Ranger's office. Grizzly Bears are not indigenous to Colorado, only American Black Bears are; a smaller, less vicious species of bear.
- Goof (factual errors): The brothers use Anasazi symbols to fight the Wendigo in Colorado when the tribes were actually located in the Southwest. Dean says that Wendigo are typically found in the Northeast of the country (Minnesota) and he's never heard of one as far west as Colorado.
- Goof (errors in geography): There is no "Black Water Ridge" in the Lost Creek wilderness of Colorado. The coordinates left by their father (35, 111) actually meet in Arizona.
- Goof (errors made by characters, possibly deliberate errors by the filmmakers): Upon arriving in Colorado, while the Winchester brothers are at the ranger station gathering information, Sam states that they are natural resource majors at UC-Boulder. The school is actually known as CU-Boulder.
- The book Tommy is reading in the beginning is: "The Hero with a Thousand Faces" by Joseph Campbell (III). In this book Campbell's unique perspectives examine the world's complex and interwoven mythology, folklore and religion, providing an understanding of the essence and genesis of humanness.
- Jess' birth date is shown to be the same as Dean's (January 24th). The date of her death, November 2, 2005, is the anniversary of the death of Sam and Dean's mother, who died in November 2, 1983.
- When discussing how wendigos came about, Ben refers to the Donner Party. The Donner Party was a group of pioneers headed west in a wagon train to California in the winter of 1846 who became trapped by an early snow storm while crossing the Sierra Nevada Mountains. They were stranded for four months and resorted to cannibalism to survive.
- SPOILER: Body count: 4
- Callum Keith Rennie and Donnelly Rhodes also starred together in the Battlestar Galactica (2004) series.