The Grim Adventures of Billy and Mandy · SEASON 1
Big Trouble in Billy's Basement
Episode 20 · 2002-10-11

- Animation
- Comedy
- Kids
Episode overview
Billy steals Grim’s “bad book” and accidentally brings about the beginning of an apocalypse. Hoss Delgado returns to lend a hand as Grim and Mandy try to stop Billy from bringing existence to an end!
Season 1 episodes
1. Meet the Reaper2001-08-24
2. Skeletons in the Water Closet2001-08-24
3. Opposite Day2001-08-31
4. Look Alive!2001-08-31
5. Mortal Dilemma2001-09-07
6. Get Out of My Head!2001-09-07
7. Fiend Is Like Friend Without the 'R'2001-10-05
8. Recipe for Disaster2001-10-12
9. A Dumb Wish2001-10-19
10. Grim vs. Mom2002-07-19
11. Tastes Like Chicken2002-07-19
12. Grim or Gregory?2002-07-26
13. Something Stupid This Way Comes2002-07-26
14. A Grim Surprise2002-08-02
15. Beasts and Barbarians2002-08-02
16. Hoss Delgado: Spectral Exterminator2002-08-09
17. To Eris Human2002-08-09
18. Billy's Growth Spurt2002-10-04
19. Billy & the Bully2002-10-04
20. Big Trouble in Billy's Basement2002-10-11
21. Tickle Me Mandy2002-10-11
22. Little Rock of Horrors2002-10-18
23. Dream a Little Dream2002-10-18