The Grim Adventures of Billy and Mandy: Season 1 Episode 20
Big Trouble in Billy's Basement
After 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.
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Opensubtitles
1 - 1Meet the Reaper Aug. 24, 2001- 1 - 2Skeletons in the Water Closet Aug. 24, 2001
- 1 - 3Opposite Day Aug. 31, 2001
- 1 - 4Look Alive! Aug. 31, 2001
- 1 - 5Mortal Dilemma Sep. 07, 2001
- 1 - 6Get Out of My Head! Sep. 07, 2001
- 1 - 7Fiend Is Like Friend Without the 'R' Oct. 05, 2001
- 1 - 8Recipe for Disaster Oct. 12, 2001
- 1 - 9A Dumb Wish Oct. 19, 2001
- 1 - 10Grim vs. Mom Jul. 19, 2002
- 1 - 11Tastes Like Chicken Jul. 19, 2002
- 1 - 12Grim or Gregory? Jul. 26, 2002
- 1 - 13Something Stupid This Way Comes Jul. 26, 2002
- 1 - 14A Grim Surprise Aug. 02, 2002
- 1 - 15Beasts and Barbarians Aug. 02, 2002
- 1 - 16Hoss Delgado: Spectral Exterminator Aug. 09, 2002
- 1 - 17To Eris Human Aug. 09, 2002
- 1 - 18Billy's Growth Spurt Oct. 04, 2002
- 1 - 19Billy & the Bully Oct. 04, 2002
- 1 - 20Big Trouble in Billy's Basement Oct. 11, 2002
- 1 - 21Tickle Me Mandy Oct. 11, 2002
- 1 - 22Little Rock of Horrors Oct. 18, 2002
- 1 - 23Dream a Little Dream Oct. 18, 2002
