Memory of A Memory is the 55th episode of Adventure Time and 3rd episode of Season 3. It first aired on July 25, 2011.
The episode starts with Finn and a mysterious wizard (Which is really Ash in disguise) on Jake's shoulders, while he is huge. The man keeps on saying "She's in trouble!". They ask who's in trouble, and he says it's Marceline that's in trouble. They all go to Marceline's House and see that she is unconscious.
- This is the first and only episode that goes into Jake's family's house.
- Ash first appears in this episode.