| Season 2, Episode 13|
| Written &|
"The First Adventure"
"Simon's Sanity" is the thirteenth episode in the second season of CamDog and ACat's episodes. It is the thirty-ninth episode overall.
When Simon begins sleep-walking and showing signs of insanity, Betty and Marceline enter his mind to find the source of the problem.
- Schwable (cameo)
- Princess Bubbegum (mentioned)
- Luna Abadeer (mentioned)
- The Lich (possessing the snail)
In Simon's MindEdit
- Ice King/Manifestation of Insanity
- This episode takes place right after "Sweet Sixteen".
- Tai is wearing his ring in this episode.
- This is the second time that a character interacts with its own gender-swapped counter-part.
- This is most likely the last time (besides in stories or flashbacks) that anyone encounters the Ice King.
- This is the last episode in the first half of season two of CamDog and ACat's episodes.