BMO Noire

"BMO Noire" is the seventeenth episode in the fourth season of Adventure Time.

Synopsis
BMO tries to solve the mystery of Finn's missing sock.

Plot
Finn asks Jake where his sock is, but Jake denies taking it. They get into an argument when Finn asks Jake to help him look for it. At this point the colors change to black and white (like an old movie). Jake convinces Finn to go out with only one sock and BMO snaps a picture of Finn's foot as he leaves.

BMO notices Ronnie in the picture and grabs him for questioning. BMO spots lipstick on the back of Ronnie's neck and asks him about Loraine. Ronnie warns BMO to stay away from her, but BMO assures him that they are ancient history. Ronnie then denies taking the sock, but points out a stain on Finn's other sock in the photo, saying that it looks like a grape juice stain. BMO goes into the pantry to check out the grape juice, but someone traps it by shutting the door. Suddenly, the door opens and Officer Davis is standing there. He tells BMO to stay out of police business and threatens to put it behind bars.

BMO, ignoring Officer Davis' advice, heads over to Loraine's hoping that she could lead it to Ronnie. BMO asks Loraine where the sock is, but she denies knowing anything about it. When BMO suggests that Ronnie took it she laughs at the idea, saying that if Ronnie was man enough to take a sock she wouldn't be spending her nights with Bebe. BMO catches Loraine mentioning that the sock is Finn's and points out that she shouldn't know any details of the case. Loraine confesses that Bebe was the one who stole the sock. As BMO is leaving, Loraine asks it not to tell Ronnie about her and Bebe, but Ronnie is hiding near the rafters.

BMO heads to Bebe's, a dance club downtown, and immediately starts stepping on Bebe and grilling him about the sock's location. Bebe denies knowing anything about socks, so BMO grabs some soot from a furnace and smears it on Bebe telling him that Loraine sold him out. Bebe denies it and tells BMO that it was Ronnie who took the sock. BMO goes to wash the soot off of its hands, but when he gets back Bebe is dead and the police are arriving. BMO runs from the cops, but it trips over one of them and falls down the Tree Fort's ladder, hitting its head.

While unconscious, BMO has a strange dream and wakes up to find Neptr next to it. BMO asks Neptr if he had seen any cops down there. Neptr tells BMO that only they and Ronnie had been down there all day and that "about a socks-worth" of treasure was missing from that room. BMO realizes that Ronnie took the sock to carry the treasure, killed Bebe so he wouldn't tell anyone and pinned it on BMO.

BMO goes back upstairs to look for Ronnie, but finds a chalk outline of Ronnie instead. Officer Davis tells BMO that it is off the hook since they know Ronnie killed Bebe and took the treasure. Officer Davis hands BMO the confession Ronnie left and tells him to let the case go. BMO then notices that the note was written with lipstick and runs outside.

Loraine is sitting on top of a barrel, with treasure, and floating in a pond. Loraine confesses to framing Ronnie and Bebe and then reveals that the sock is in her and BMO's "secret grown-up kissing spot." Loraine bids farewell, floats to the opposite side of the pond and jumps on to land.

The colors change back to normal as Finn and Jake return to the Tree Fort. BMO shows Finn that his sock was in his pillow the whole time.

Main Characters

 * BMO
 * NEPTR
 * Ronnie
 * Loraine (antagonist)

Minor Characters

 * Finn
 * Jake
 * Snail

Trivia

 * This is the second time Jake is seen with make-up, first being in "Tree Trunks".
 * Finn and Jake can be seen in the background of the picture in the extended preview.
 * In the preview art, there are two big figures behind the title "Mystery Time," by the silhouette appears to be from Finn and Jake.
 * This is the first 'Adventure Time episode that is in black and white.
 * NEPTR appears for the first time since Hot to the Touch.
 * This is the first episode where it is mainly focused on BMO.

Cultural references

 * "B-Mo Noire" is a reference to the concept of film noir (French for "black film"), a genre of crime movies popular in the 1940s and 50s.
 * The episode uses conventional elements of film noir including: black-and-white photography, contrasting light and shadows, the use of voiceover narration, and the protagonist of the story being a hardboiled detective.

Episode connections

 * This is the fourth time Adventure Time has had a mystery episode. The first was "Mystery Train", followed by "The Creeps" followed by "Apple Thief".

Errors
BMO finds Finn's sock hidden inside his pillow. But in the next scene, you can see Finn wearing both his socks while BMO is still holding the one Finn couldn't find.

Videos
Adventure Time - B-Mo Noire (long preview)|The extended preview. "BMO Noire" Animatic|Animatic.