Season 4
Episodes
1. Hot to the Touch
Finn develops a crush on Flame Princess and tries to get to know her, which proves difficult due to her destructive power.
2. Five Short Graybles
Follow as 5 stories intertwine together, can you find the connection?
3. Web Weirdos
When Finn gets trapped in a giant spider web, he ends up playing marriage counselor to a couple of grumpy arachnids.
4. Dream of Love
Tree Trunks is courted by an oinking suitor, but much to Jake’s dismay, this interferes with her baking habits.
5. Return to the Nightosphere
Marceline’s dad banishes Finn and Jake to the Nightosphere, and it stinks. Literally.
6. Daddy's Little Monster
Finn and Jake attempt to rescue Marceline and find out what's making her behave so strangely.
7. In Your Footsteps
A bear cozies up to the guys, but his true intentions may be hidden.
8. Hug Wolf
Finn goes through a transformation after a run-in with a hug wolf.
9. Princess Monster Wife
Princesses lose body parts under mysterious circumstances.
10. Goliad
Battling with her new realization of her own mortality, in a sleep deprived state Princess bubblegum creates her own heir to the throne. After meeting the heir, Finn and Jake decide to teach her the ways of the world.
11. Beyond This Earthly Realm
When Finn finds a porcelain lamb, it transports him into the spirit world and only the Ice King can help get him out.
12. Gotcha!
In order to do research for her tell-all memoir about men, Lumpy Space Princess goes undercover working for Finn and Jake.
13. Princess Cookie
Finn and Jake are called to solve a Candy Kingdom hostage crisis when a rogue cookie takes over.
14. Card Wars
Finn and Jake play Card Quest, an epic game.
15. Sons of Mars
Magic man has most of his power taken from him by his brother, in a fit of desperation, he swaps the way Jake and Himself look. Magic Mans brother takes Jake to Mars for punishment,
16. Burning Low
Princess Bubblegum may be jealous when Finn start hanging out with Flame Princess.
17. BMO Noire
BMO tries to find Finn's sock.
18. King Worm
Finn has a vivid dream that may be more than it seems.
19. Lady & Peebles
Princess Bubblegum and Lady Rainicorn look for Finn and Jake, who are missing after a run-in with the Ice King.
20. You Made Me!
When a creepy sleep-peeping Lemongrab upsets Princess Bubblegum with his creepy ways, Finn and Jake need to tend to some issues in the Outer Realm.
21. Who Would Win?
The guys challenge a monster to a fight but end up battling each other.
22. Ignition Point
Finn and Jake sneak into the Fire Kingdom to retrieve Fire Princess' scented candles and overhear a plot to assassinate the king.
23. The Hard Easy
Frog People seek protection from an evil lizard who's attacking their swamp.
24. Reign of Gunters
The Gunters cause chaos in Ooo.
25. I Remember You
The Ice King and Marceline bond over song and memories.
26. The Lich
A visit from the Lich King sheds light on Ooo's secrets.