- Story Arc: Demona and Macbeth; the Weird Sisters, Coldstone
- Characters: The Manhattan Clan, Demona, Macbeth, The Weird Sisters, Coldstone (Othello, Desdemona, and Iago)
- Enemy(ies) : Demona, Macbeth, Iago
Macbeth and a strangely familiar-looking accomplice steal Coldstone from the Clock Tower; the Manhattan Clan go to Macbeth's mansion to look for him but are themselves captured by Demona and Coldstone (under Iago's control). Demona challenges Elisa to a duel at High Noon, which Elisa is too exhausted to survive on her own.
Meanwhile, the Weird Sisters continue to watch and influence Demona and Macbeth, guiding them towards a great battle ahead...
This episode contains the following tropes:
- Arch-Enemy: The deep and personal animosity between Demona and Macbeth is highlighted in this episode when the Weird Sisters remark that one can only be forced to act against their nature (i.e. work together instead of against each other) for so long.
- Batman Gambit: Stealing Coldstone's body was just smokescreen; obtaining the three magical relics were the real goal. As Macbeth notes in the end, Goliath would never have rested if they alone were stolen, but taking Coldstone distracts him from even realizing the relics were taken.
- Brainwashed: The Weird Sisters cast a spell on Macbeth and Demona to work together. Unlike most Brainwashed and Crazy examples, their personalities remain the same and they frequently butt heads about how to deal with the Gargoyles.
- Cat Fight: Between Elisa and Demona near the end of the episode. Coldstone and Macbeth lampshade it by saying how "diverting" it is.
- Continuity Nod:
- Hudson's and Broadway's efforts to learn to read, and Broadway's difficulty pronouncing "right," call back to "A Lighthouse on the Sea of Time" and "The Silver Falcon" respectively. Elisa's exhaustion is the result of her lack of sleep from "City of Stone."
- After Demona turns human in front of Elisa, she strikes the same pose Elisa did in "The Mirror" when posing as a guard for Titania's Mirror at the museum. Ironically, the reflection of this pose stayed in the mirror after Elisa moved and Puck's "gift" for Demona was the last thing he did when she summoned him from it and the last thing before she smashed it.
- Creator Cameo: When Lexington is typing in passwords in an effort to reactivate Coldstone, among the words that he tries are "Othello", "Desdemona", "Iago", and "Weisman". The last is in reference to series creator Greg Weisman.
- Dirty Old Man: When Coldstone remarks that the fight between Elisa and Demona is "diverting," Macbeth replies "You don't know the half of it."
- Evil Cannot Comprehend Good: Demona arranges for the face-off because she's certain Elisa won't show, and she wants to prove that Goliath's faith in humanity is misguided. Elisa is this close to wondering what she can really do against these odds, but she ultimately shows up.
- Foreshadowing: While the Weird Sisters have magically paused Demona and Macbeth during an argument, they talk about their plans for the three magical artifacts (listed in The Reveal entry below) that they succeeded in taking and mention enigmatically their end goal which is revealed in the three part episode "Avalon".
- Getting Crap Past the Radar: The aforementioned catfight between Elisa and Demona and Coldstone's and Macbeth's reactions to it likely goes over the heads of the child audience.
- Good Feels Good: Elisa, Broadway, and Hudson discuss a newspaper article about a pair of adults saving a kid from drowning. It ultimately it spurs Elisa to fight Demona at high noon.
- Honor Before Reason: Macbeth agrees with Elisa that Demona should fight her one-on-one instead of shooting her with a laser cannon, because it is more sporting. He (again) refuses to crush the gargoyles in their sleep.
- I'm Not a Hero, I'm...: ...just doing her job as a police detective, according to Elisa.
- Internal Reveal: Elisa discovers that Demona turns human during the day, and presumably tells the Manhattan Clan, as Goliath is aware of this fact in future episodes.
- Mythology Gag: The title of this episode is a Call-Back; in his intro in "Enter Macbeth" Elisa warns of just that: "What if the next freak-job Xanatos hires comes here with a sledge-hammer at High Noon?"
- Put on a Bus: Coldstone (with Othello in control) leaves for parts unknown, as the others wouldn't be safe due to Iago.
- Shout-Out: The title of this episode and its theme of responsibility in the face of frightening odds comes from the 1952 film, High Noon.
- Tap on the Head: Elisa is thrown by Macbeth into a wall and hits her head, leaving her unconscious from the morning until sunset.
- The Reveal: The final scene reveals the Weird Sisters are controlling Macbeth and Demona, and orchestrated all of this in order to get the Grimorum Arcanorum, the Eye of Odin, and the Phoenix Gate.
- Villain Team-Up: Demona, Macbeth and Iago (through Coldstone) all work together for this episode.
- Xanatos Gambit: Demona believes her trap is fool-proof; either Elisa comes to the park at high noon and faces Macbeth, Coldstone and herself all by her lonesome, thus ensuring her death, or she doesn't come and Goliath knows that she abandoned him. "Either way, I win."