Holly Jolly Secrets Part I

"Holly Jolly Secrets Part I" is the nineteenth episode and the first part of a two-part holiday special in season three of Adventure Time.

Synopsis
In the first part of a holiday special, Finn and Jake try to decipher the hidden secrets of the Ice King's video diary.

Plot
Finn and Jake are trying to dig up a treasure Jake had found in the Dump and had buried without opening. When they get to the treasure Finn recognizes it, saying that he saw Ice King with it and burying it in a pile of boogers in the Dump. So they see that inside the suitcase is a bunch of tapes belonging to the Ice King and make plans for a secret tape watching.

Jake puts up flyers to warn people that the tape watch is for Finn, Jake, and Beemo only but the Ice King, while trying the William Tell trick on Gunter, sees one and goes over to the Tree Fort. At that very location Finn and Jake start to watch the tapes and see that they are video journals and get bored soon. After some snack making Finn and Jake think there might be a secret code hidden in the message.

To crack the code Finn and Jake call up Princess Bubblegum, who is the 'smartest person' they know, but the line is interrupted by the Ice King who wants to watch the tapes too. Beemo sees Ice King from a window and warns Finn and Jake who hang up on the Ice King. After caught up, he summons huge snow drifts that completely cover the Grass Lands as Jake starts to scream.

Major Characters
thumb|300px|right|"Holly Jolly Secrets" Animatic
 * Finn
 * Jake
 * Ice King
 * Beemo

Minor Characters

 * Princess Bubblegum
 * Gunter (Penguins)
 * Skunk
 * Turtle Princess (mentioned)
 * Rat
 * Snail

Trivia

 * This episode was on Cartoon Network's 2011 Christmas programming event
 * This episode is a two-part Holiday Season Special.
 * This is the second pair of episodes that are considered to be two parts of the same storyline. The first pair was "Mortal Folly" and "Mortal Recoil".
 * While watching the videos, Finn and Jake are on the floor eating Christmassy foods such as a substance that looks like Figgy Pudding and rolls.
 * In this episode, the Ice King clearly calls his penguin "Gunther" instead of "Gunter". He also calls multiple penguins by this name.
 * The title card shows Finn, Jake and Beemo setting traps outside the chimney possibly waiting for the Ice King to come down. Jake's outfit reflects Jewish design, the small hat a possible Kippah and the scarf as Tallit.
 * Finn's statement in "Too Young" that he does not bathe is once again contradicted when Beemo's alarm clock goes off, saying it is Finn's bath time. Though, to be fair, he did avoid it this time.
 * The video tape showing the Ice King exercising may have been recorded sometime during the episode "Loyalty to the King". However, the Ice King shaved his beard first in "Loyalty to the King" then exercised, but in the video the Ice King had his beard so this may not be true.
 * This is the first episode in which it is implied that the Ice King had met Beemo or Marceline before.
 * Beemo says that Finn and Jake can play videos by putting them in his butt, although it appears that pictures come out of his butt from "The Creeps". The same implies for "Conquest of Cuteness" where photos print out from where game cartrage goes.
 * Beemo's alarm for Finn's bath time sounds like a car alarm.
 * A skull that resembles the Lich is mounted on the wall when Finn, Jake, and Beemo go look out the window.
 * In a secret tape that the Ice King had recorded, he is seen singing and mimicking Marceline's "Fry Song", despite Marceline and the Ice King having never met on screen before, so this could present a continuity error within the show.
 * The Ice Kings skin when he's out in the snow is brighter than his usual color.
 * In the Ice King's Penguin Dance Party Video, there are triangles attached to two strings with letters on them, spelling the words "Happy Birthday", indicating that he recorded it during his birthday.
 * The Ice Kings eyebrows are sometimes shown as being in a thunderbolt shape.
 * When Finn is looking at Jake's map, there are random pictures on it, like flaming pizza, a dog, and a cat.
 * Beemo is shown to want to live up to its programming no matter what, as when Finn and Jake turn off his alarm for Finn's bath, he says "We can still take a bath."
 * At one scene, when Finn and Jake were watching the Penguin Dance Party Video, Beemo looks bigger than them.
 * If you slow down the first sped up part, you find out that the Ice King occasionally takes a bath in milk.