Season 4

1. Jacob Two-Two and the Boggie Beastie

2. Jacob Two-Two and the Crumbling Cookie Catastrophe

3. Jacob Two-Two's Broadcast Bungle

4. Jacob Two-Two and the Cranial Classroom Caper

5. Jacob Two-Two and the Wicked Glitch

6. Jacob Two-Two and the Big Brain Exchange

7. Jacob Two-Two and the Teacher's Pet

8. Jacob Two-Two and the Valentine's Day Disaster

9. Jacob Two-Two and the Molecular Mayhem

10. Jacob Two-Two and the Puzzling Portable

11. Jacob Two-Two and the Priceless Puck

12. Jacob Two-Two and the Mata Hari Hamster

13. Jacob Two-Two and the Halloween Hullabaloo

14. Jacob Two-Two and the Wooden Nickel Knuckleheads