- Story Arc: Xanatos, Fox, and the Eye of Odin
- Characters: The Manhattan Clan, Fox, David Xanatos, Owen Burnett
- Enemy(ies) : Fox, Xanatos
Xanatos proposes to Fox, giving her the Eye of Odin as an engagement gift. Over the next month, a series of attacks by a werewolf-like creature makes the citizens of New York nervous, and their police busier than usual. With mysterious disappearances by Fox coinciding with the "werewolf" attacks, Xanatos suspects that Fox is the "werewolf"; after confirming this, and learning that the Eye of Odin is responsible for her transformations, he goes through a series of increasingly desperate plans to rescue her and stop the attacks.
Xanatos and Fox both reappear in the very next episode, "Vows."
This Episode contains the following Tropes:
- Beast and Beauty: Goliath and Elisa Maza, which is lampshaded with Elisa dressing up as Belle. Gender-flipped with Xanatos and Fox.
- Berserk Button: Despite David Xanatos being perpetually suave and in control, even he has these and when they are triggered he tends to be visibly ticked. Goliath manages to press one of Xanatos's when he makes apparent his love for Fox.
- Continuity Nod:
- When Golaith and Elisa meet Xanatos while trying to contain Fox in her werebeast state, Elisa mistakenly believes that she is another mutate who has fallen victim to Xanatos like what happened to Derek Maza (now going by "Talon").
- There's one is to the five part pilot Awakening. When Xanatos finds Goliath and Elisa he tells them that "Old habits die hard" as he is removing the tracking beacon he placed on Goliath, a tactic he did in Awakening part three.
- Even Evil Has Loved Ones: Xanatos and his romantic affections for Fox demonstrate that even a devious mastermind like him can love someone.
- Halloween Episode: Complete with a werewolf and several people in costumes.
- Love Is a Weakness: Xanatos loves Fox, and once gave up the Eye of Odin to get her back safely. At one point, he has this exchange with Goliath:Xanatos: So now you know my weakness.Goliath: Only you would regard love as a weakness.
- Love Makes You Dumb: Xanatos is on plan D in the second half of the episode. That normally does not happen to him. (Also note that plan D is, er, "ask my enemies nicely if they would be willing to help me out."). Xanatos' Plan D wasn't entirely successful either, since Goliath initially refused his request. (So his Plan E was even more desperate than Plan D: "Plant another tracker on Goliath, stay within earshot of him, and wait for him to change his mind.")
- Manipulative Bastard: Xanatos is denied the opportunity to do this as Goliath and Elisa spy on him and announce their discovery of his attempt at this. Though he manages to get their help in the end, but it would be on mutual terms rather than to his own advantage.
- Our Werewolves Are Different: Xanatos' engagement gift to Fox turned her into a wolf-like being every night until he and the gargoyles were able to forcibly remove it. In this case, it's noted that her were-form is unsustainable; she has to feed constantly and is in danger of burning out and dying.
- Rousseau Was Right: Goliath and Elisa speak about this during the Halloween block party. Elisa is strongly opposed to helping Xanatos, believes that the werebeast is not Fox and that he has some other ulterior motive, which given his past history of deceptions (such as the aforementioned Mutate incident) is understandable. However Goliath counters by noting that if the creature is Fox, they'd be dooming her to death and that "If Xanatos speaks the truth; if someone like him can love, perhaps there still is hope for this world."
- During the Halloween episode, Elisa dressed up as Belle. She and Goliath start dancing the exact same waltz in Beauty and the Beast.
- The whole scene where Xanatos hunts down werefox is taken from Predator 2, down to the slaughter house and Xanatos's cannon.
- The creators have said that the scene when the sign (which says "Mercury Building") explodes behind Fox at the end of the episode was a deliberate reference to the 1986 movie Highlander.
- Teeth-Clenched Teamwork: Xanatos has to swallow his pride and get Goliath's and Elisa's help to remove the Eye of Odin to reverse Fox's transformation.
- Unwitting Pawn: Averted. Goliath and Eliza followed Xanatos and eavesdropped on him as he was planning on doing this to the Manhattan clan. They came out of hiding just as he finished speaking with Owen Burnett to tell Xanatos that they won't be manipulated into another of his schemes unknowingly.
- Wrecked Weapon: Xanatos crunches Elisa's gun in order to ensure that Fox will not be killed during the confrontation to undo her transformation.
- Xanatos Speed Chess: Yet again, here is the Trope Namer. By the episode's end, Xanatos goes down to plan E.