The Replacement

"The Replacement" is the third episode of the fifth season of Buffy the Vampire Slayer, and is the eighty-first episode altogether. It was written by Jane Espenson and directed by James A. Contner. It originally broadcast on October 10, 2000.

Synopsis
When Xander takes a mystical hit from the demon Toth that was intended for Buffy, he wakes up to find a mysterious double living his life in his place -- and, frankly, doing a much better job of it.

Summary
Xander and Anya watch a movie with Buffy and Riley while listening to the background noise of Xander's drunken parents fighting and yelling upstairs. The next day, the gang looks at a potential new apartment for Xander. He doesn't think he can afford it and this upsets Anya. Giles receives a visit from a demon searching for the Slayer. He later identifies the demon as Toth, only survivor of the Tothric Clan.

The Scoobies check out the city dump in search of the demon and find Spike collecting. The demon hits Xander with light from a rod and knocks him to the ground. He gets to his feet and walks off with the rest of the gang, but there is another Xander still lying in a pile of trash. The next morning, one Xander awakens at the city dump and then discovers his double upon returning to his house. Meanwhile, Spike has put together a Buffy doll from mannequin parts which he uses to practice beating up on. One of the Xanders is very ambitious and gets a promotion at work, signs a lease for the apartment, and sets up a date with Anya. The other, unconfident Xander watches as all this happens and finally confronts his double. After the two Xanders see each other, the confident Xander talks to Buffy and she makes this a matter of Slayer business. Soaked by the rain, weak Xander goes to Willow and tries to explain that this double is taking over his life. He tells Willow that the double is doing a better job of living his life but then suddenly realizes that his double is going after Anya and that is one thing he won't allow. Anya and the Xander double discuss their future and Anya expresses her fears about not living forever. Giles discovers that the rod Toth used split Xander into two real Xanders, one with weak qualities and the other with strong qualities. The weak Xander crashes the date between strong Xander and Anya. Both think that the other is a demon and the weak Xander pulls out a handgun he got from Anya's apartment.

Buffy tells the doubles the truth about their situation and tries to convince them not to kill each other. Toth appears at the apartment then Buffy and Riley fight and kill him. They eventually begin to get along, and their actions become so similar to each other that the comment is made that Xander is a "bad influence" on himself. Giles and Willow research and come up with a way to reunite the two Xanders but Anya expresses disappointment over this as she wants both to stick around for some sexual shenanigans, much to the disturbance of the others. Willow ends the spell on the Xanders and makes them one again. While moving Xander into his new apartment, Xander and Riley talk. Riley confesses that despite how much he loves Buffy, he realizes that she doesn't feel the same.

Quotes and trivia

 * Buffy: Well, if this guy wants to fight with weapons, I've got it covered from "A" to "Z" - from ax to... zee other ax.


 * Xander: So you bought the magic shop and you were attacked before it opened. Who's up for a swingin' chorus of the "We told you so" Symphony?


 * Riley: Psychologically this is fascinating, doesn't it make everyone wanna lock them in separate rooms and do experiments on them? [everyone stares] Just me then.


 * Giles: We just, uh, need to arrange the candles. Also, we should continue to pretend we heard none of the disturbing sex talk.
 * Willow: Check. Candles and pretense.


 * Xander: Hey, wait till you have an evil twin. See how you handle it. (Exits)
 * Willow: (pouts) I handled it fine.
 * ''-- a reference to "Doppelgängland".


 * Riley: Hey, I'm well aware of how lucky I am. Like, lottery lucky. Buffy's like nobody else in the world. When I'm with her, it's like - it's like I'm split in two - half of me is just on fire, goin' crazy if I'm not touching her. Other half is so still and peaceful, just perfectly content. Just knows, this is the one. But she doesn't love me.
 * ''-- Riley likens himself metaphorically to what Xander has just gone through literally in confessing that he knows Buffy doesn't love him.


 * To prove to Willow that he's the real Xander, weak Xander does the Snoopy Dance, which Willow noted she likes seeing him do when she goes to his house to watch "A Charlie Brown Christmas" ("Passion").


 * Nicholas Brendon's real-life twin brother Kelly Donovan is his body double for this episode. In almost all of the scenes Nicholas Brendon played both suave and goofy Xander with his brother Kelly Donovan playing the twin with the non-speaking role. Kelly only spoke in the scenes where both Xanders had speaking lines.


 * Xander's quote "Shoot us both, Spock" is from the Star Trek episode "Whom Gods Destroy" in which Kirk tells Spock to shoot both himself and Garth of Izar disguised as Kirk. But this episode is actually an homage to the Star Trek episode "The Enemy Within" in which Kirk is split into his two emotional halves.


 * Xander makes a comment about his Babylon 5 commemorative plates. While such plates were planned, they never actually went into production.


 * Michael Bailey Smith, who portrays the demon Toth, is the only other person other than Robert Englund to play Freddy Krueger.