Set just days before October 31st, the story begins with a series of gruesome, ritualistic deaths—starting with a man swallowing razor blades hidden in Halloween candy and a student drowning in boiling water while bobbing for apples. These aren't just random acts of violence; Sam and Dean discover they are blood sacrifices intended to summon , an ancient demon and the Celtic origin of Halloween. The Arrival of the Angels
: While the show pronounces the demon's name as "Sam-hane," Sam correctly notes that the original Celtic festival is pronounced "Sah-wen" .
: We are introduced to Uriel (played by Robert Wisdom), a "specialist" angel with a deep-seated disdain for humans, whom he calls "mud monkeys". [S4E7] It's the Great Pumpkin, Sam Winchester
: The title is a direct play on the Charlie Brown special It's the Great Pumpkin, Charlie Brown . It also includes a Wilhelm scream and a death scene inspired by Halloween II .
: The episode features Ashley Benson , who later became famous for Pretty Little Liars , as the witch Tracy Davis. Set just days before October 31st, the story
The climax takes place in a cemetery where Samhain has risen and trapped students in a mausoleum. While Dean rescues the students from zombies and ghosts, Sam faces Samhain alone.
: In the aftermath, Uriel threatens Sam with "obliteration" and cryptically suggests he ask Dean what really happened in Hell. Meanwhile, Castiel reveals to Dean that their orders were actually a test: they were commanded to do whatever Dean decided, testing his resolve under battlefield conditions. Did You Know? : We are introduced to Uriel (played by
This episode marks a significant turning point in the series' mythology: