Bones

The music piece played by Levi Yoder for his audition is Chopin's Nocturne Op. 9 No. 1.

At the beginning of the episode, Animal Control has absolutely no trouble picking up and crating the feral cats that had snacked on the body. Realistically, the cats would have scattered at the first sign of a human's approach and would have never willfully been captured.

Goof: In the scene where Booth and Bones find the CIA agent in the trunk of the car, Bones' hair is tied back when she's looking at the blood dripping from the car, down in the back shot when they open the trunk, then up again when they show her from the front.

Goof: The body of the dead Russian is found at Dulles Airport in Fairfax County, VA. However, the animal control vans say Montgomery County, which is in Maryland, about 30 miles from the airport.

Goof: When Brennan is talking to Harmonia in her house, you can see only two rows of cards are laid down. Yet after flipping only one card, she is placing them in the corner nearest Brennan showing a 3rd row partially filled in.

Goof: when Angela types in "retirement communities" into her recognition program, the word 'algorithm' is spelled 'alogrithm' on the computer screen.

In the closing act, Caroline Julian gives Bones and Booth a ride in a yellow AMC Gremlin. The car looks exactly like Caroline's car in the season two episode "Judas on a Pole," which was badly damaged after Booth borrowed it and Bones's brother Russ backed into it with an SUV while escaping with Bones's father. The damage to Caroline's car was most likely more than it was worth, so unless she restored it out-of-pocket or found another car of the same model, color, and design, this is a goof.

Booth: (to Sweets) I don't own a nightclub, I'm not married to Bones, you are not a zany bartender, and I hate clowns.

Booth seems to forget this fact at the end of the episode, when passing by a clown with Brennan. However, Booth could have mentioned his hate of clowns as a fact he knew was true regarding his former self, but one that may not be true anymore -- giving the situation more believability.

Goof: About three-fourths of the way though the episode Brennan is attacked by Dr. Leacock. He stabs her in the arm and she is clearly badly injured. However, for the rest of the episode no bandage is seen on either of Brennan's arms.

Booth's middle name is revealed in this episode -- Booth himself says it's Joseph.

Sweets' band is Gormogon which is a reference to the story arc of season three, where they were trying to catch a serial killer dubbed Gormogon. Sweets also clarifies that the band is called Gormogon, not him, which references "The Pain in the Heart" where Sweets is accused of being Gormogon by Cam.

Vincent: (to Zack) Because you're the kind of moron that goes to jail for a murder he did not commit.
This comment references information revealed in "The Perfect Pieces in the Purple Pond." Wherein Zack tells Sweets, confidentially, that he never actually committed murder—he only felt responsible for it.

Jared Booth, who in this episode assumes a law enforcement role similar to that of his brother Seeley's, is wearing the "Cocky" belt buckle that Seeley is often seen wearing.

Goof: In the last scene, when Hodgins is doing a voice-over of what Brennan is typing on a laptop, the last line of Hodgins' voice-over (which Brennan whispers along with) is "Burdens that allow us to fly." -- but on the screen of Brennan's laptop it says "Burdens which allow us."

Brennan: You were seeing something in there. What were you seeing?
Booth: Stewie, you know, the baby from The Family Guy.
Brennan: You— you saw Stewie ... in there? In the interrogation room?

Brennan doesn't ask for any clarification as to who "Stewie" is, which means that she apparently knows what Family Guy is. It's very hard to believe that Brennan would know about a Fox TV show but not pick up on so many other very common pop culture references, as has been seen throughout the series. Also, she doesn't even own a TV.

Fisher comes up with the idea to use denture cleaner to clean the bones because they contain calcium -- but earlier on in the episode, Brennan stated that the bones were rubbery because they sat in vinegar, which caused calcium to leech out of them.

Goof: One of the wine tasters finds a finger in her wine glass -- but there's no way that a wine spout would have been big enough to let a human finger through it. Even if it did happen to be big enough, there's no way that whoever was pouring the wine would have not noticed the finger plopping into the glass.

Goof: When the wine tasters drink the wine, they immediately spit it out. Later on, Brennan states that the opening of the cask caused the wine to turn vinegary. The affluent wine tasters should have noticed the vinegar smell prior to drinking the wine.

It is revealed in this episode that Booth has been having multiple hallucinations throughout the season (Luc Robitaille, Teddy Parker, and Stewie Griffin) due to a brain tumor, which Brennan describes as the type of tumor that is "usually benign."

Goof: When the wine tasters tried the wine that had the victim's body in it, the wine's consistency was indistinguishable from normal wine. But when the Jeffersonian team examined the wine the body was in, the whole wine barrel was filled with gooey, thick liquid that would have never passed as normal wine.