ScoobyNatural

Although the voice actors for Shaggy, Daphne, and Velma have provided the voices of those characters in recent Scooby-Doo cartoons, Frank Welker has been voicing Fred since Scooby Doo, Where Are You! (1969) and took over as Scooby in 2002. Welker is the only actor from A Night of Fright Is No Delight (1970) to participate in this episode.

Incorrectly regarded as goof: While it is learned in Devil's Bargain (2018) that Gabriel is still alive, it is not yet known to Sam and Dean. It's true that it is also not yet known how Gabriel is still alive, it is possible that he was only stabbed with a normal angel blade but that is something Lucifer should have noticed. Gabriel did reveal in Hammer of the Gods (2010) that each Archangel has their own "Archangel blade", he told Sam and Dean that he gave Kali a normal angel blade, then he pulls out his Archangel blade and said "I didn't want her getting her hands on this, this thing can kill me". So it seems that each Archangel has their own blade capable of killing other Archangels, though it's still unknown why the blade Asmodeus has looks different than the blade Gabriel had.

The spooky mansion from Scooby Doo, Where Are You! (1969) appears in the beginning, then the series normal opening title appears.

Featured in WatchMojo: Top 10 Most WTF Supernatural Episodes (2018)