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 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 (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): They say this episode takes place in the area around Grand Junction, but the problem is that the geography of that area is all desert, not full of trees like they implied in the episode.
- Goof (continuity error): In the beginning, when Tommy is filming his message to Hailey, his dialogue says: "Hey, Hailey. Day 6. We're still out near Blackwater Ridge. We're fine, keeping safe, so don't worry. Talk to you tomorrow." But when Hailey plays the recording for Dean and Sam, the message becomes: "Hey, Hailey. Day 6. We're still out near Blackwater Ridge. We're fine, keeping safe, so don't worry, okay? Talk to you tomorrow."
- 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.
- Jessica's tombstone shows her birthday to be January 24th (1984). January 24th (1979) is also Dean's birthday.
- One of the candles on Jessica's grave has "Virgen de Guadalupe" on it. This is based on an apparition of a brown-skinned Virgin Mary who appeared to future saint Juan Diego in 1531 and spoke in Nahuatl, the local language. She is also sometimes believed to be The Woman of the Apocalypse. That might be appropriate considering Sam's family background. The presence of this candle implies that Jessica could be Roman Catholic.
- Dean asks Roy, "Tell me, Bambi or Yogi ever hunt you back?" Dean is referring to the cartoon characters Bambi (Disney's classic movie Bambi (1942)) and Yogi Bear (Hanna-Barbera's TV show The Huckleberry Hound Show (1958)).
- Callum Keith Rennie and Donnelly Rhodes also starred together in the Battlestar Galactica (2004) series.
- In the beginning two guys are playing a first person shooter video game against each other and one claiming the other is cheating. A reference to the pilot of Threat Matrix. Executive producer John Shiban was a writer for that show.