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The Grim Adventures of Billy and Mandychevron_right
S01E20: Big Trouble in Billy's BasementAfter taking the Underworld's "Bad Book" from Grim, Billy becomes possessed by an evil entity. Then, Billy steals Grim's scythe, and uses it to open a portal to summon Yog-Sothoth. In consequence, Mandy calls for Hoss Delgado to battle Billy. It is revealed that the portal can only be sealed by throwing the book into it. As Billy eats the book, Mandy throws Billy himself into the portal, restoring everything to normal. Instants later, a portal opens up and Billy comes out and says they didn't want him there.
Air Date:
Oct 11, 2002
Production:
Casts:
Greg Eagles, Richard Steven Horvitz, Grey DeLisle, Vanessa Marshall
