The episode was written by Jim Krieg and Jeremy Adams and directed in live-action by Robert Singer and in animation by Spike Brandt.
To the group's shock, they discover an actual ghost that begins killing people (including the real culprit Cosgood Creeps) and the Winchesters and the Scooby Gang are forced to team up together to stop it.
Before getting sucked into Scooby-Doo, Castiel is shown to have gotten the fruit from the Tree of Life, bringing the Winchesters one step closer to their goal of opening a portal to Apocalypse World.
[2][3][4][5] In her review for Den of Geek, Bridget LaMonica gave the episode a score of 5/5, calling it a "milestone" and "a shameless dose of humor and nostalgia that found a way to blend two tonally different series.
"[7] Kaitlin Thomas of TVGuide compared the episode favorably to past meta-installments "Changing Channels" and "The French Mistake" and said that it "is destined to become an instant classic.