BtVS Season 5
About

Season 5 - warning *SPOILERS* if you haven't watched it.

During season five, a younger sister to Buffy, Dawn, suddenly appears in Buffy's life, and although she is new to the series, to the characters it is as if she has always been there. Buffy is confronted with Glory, an exiled hell-God that is searching for a "Key" that will allow her to return to her Hell dimension and in the process would blur the lines between dimensions and unleash Hell on Earth. It is later discovered that the Key's protectors had turned the Key into Human form as Buffy's sister Dawn, concurrently implanting everybody with lifelong memories of her. The Watcher's Council aids in Buffy's research of Glory, and she and Giles are both reinstated by the Council. Riley leaves early in the season after deducing that Buffy does not love him and joins a military demon-hunting operation, while Spike, still implanted with the Initiative chip, realizes he is in love with Buffy and continually helps the Scoobies in their fight. Buffy's mother, Joyce, dies of a brain aneurysm, while at the end of the season, Xander proposes to Anya. Glory later discovers that Dawn is the key and kidnaps her. Buffy sacrifices her own life to save Dawn's and prevent the portal to the Hell dimensions from opening.

Main Cast
The main cast who appear in the credits for season 5 are: Sarah Michelle Gellar as Buffy Summers; Nicholas Brendon as Xander Harris; Alyson Hannigan as Willow Rosenberg; Marc Blucas as Riley Finn (until episode 10); Emma Caulfield as Anya Jenkins; Michelle Trachtenberg as Dawn Summers (from 'Real Me' onward; guest star in 'Buffy vs Dracula'); James Marsters as Spike; Anthony Stewart Head as Rupert Giles


Recurring Cast
Recurring characters in the fifth season are Amber Benson as Tara Maclay; Kristine Sutherland as Joyce Summers; Charlie Weber as Ben; Clare Kramer as Glory; Troy Blendell as Jinx; Mercedes McNab as Harmony Kendall; Bailey Chase as Graham Miller; Justin Gorence as Orlando; Joel Grey as Doc; Kevin Weisman as Dreg; David Boreanaz as Angel; Adam Busch as Warren Mears; Juliet Landau as Drusilla; Julie Benz as Darla; Dean Butler as Hank Summers; Kali Rocha as Cecily Addams and Harris Yulin as Quentin Travers


Episodes

5.01 - "Buffy vs. Dracula"
Director: David Solomon
Writer: Marti Noxon
Orignal Air Date: September 26, 2000
Buffy faces Count Dracula who has come to Sunnydale to make her one of his concubines. Dracula turns Xander into a Renfield of sorts, before being defeated but not killed.

5.02 - "Real Me"
Director: David Grossman
Writer: David Fury
Original Air Date: October 3, 2000
Buffy is having trouble getting along with her sister Dawn, who is kidnapped by Harmony's gang. Harmony makes two inept attempts on Buffy's life, but fails each time and Dawn is saved.

5.03 - "The Replacement"
Director: James A. Contner
Writer: Jane Espenson
Original Air Date: October 10, 2000
Xander is split into two people by a demon, one strong, the other weak. The lame Xander is unhappy that the cool Xander lives his life better than he can, getting an apartment and a date with Anya.

5.04 - "Out of My Mind"
Director: David Grossman
Writer: Rebecca Rand Kirshner
Original Air Date: October 17, 2000
Riley is risking his health to be able to fight with Buffy. His super soldier enhancement is destroying his heart. Buffy enlists Spike to take Riley to the doctor, but instead Spike kidnaps the doctor to remove his chip.

5.05 - "No Place Like Home"
Director: David Solomon
Writer: Doug Petrie
Original Air Date: October 24, 2000
Glory, the new Big Bad, is looking for "The Key". After being beaten by Glory, Buffy meets a monk who reveals to her that she doesn't really have a sister Dawn is The Key, sent to Buffy for protection.

5.06 - "Family"
Director: Joss Whedon
Writer: Joss Whedon
Original Air Date: November 7, 2000
Tara is about to celebrate her 20th birthday, and her family comes to abduct her before she becomes a demon. Glory sends demons after the Slayer, and Tara accidentally helps them.

5.07 - "Fool for Love"
Director: Nick Marck
Writer: Doug Petrie
Original Air Date: November 14, 2000
After a close call, Buffy asks Spike about the slayers he's killed; he reveals he exploited their death wish. Buffy rebuffs Spike's advances, and while he originally is angry, he comforts her after she finds out about her mother's health condition.

5.08 - "Shadow"
Director: Dan Attias
Writer: David Fury
Original Air Date: November 21, 2000
Joyce Summers has a brain tumor, and Buffy worries about how Dawn will take it. In addition, Buffy must keep her sister safe from Glory and her magic snake.

5.09 - "Listening to Fear"
Director: David Solomon
Writer: Rebecca Rand Kirshner
Original Air Date: November 28, 2000
As Buffy and Dawn help their mother prepare for surgery, an extraterrestrial preys on Sunnydale's mental patients and follows Joyce home. The alien was summoned by Ben to clean up Glory's mess, and Buffy kills it.

5.10 - "Into the Woods"
Director: Marti Noxon
Writer: Marti Noxon
Original Air Date: December 19, 2000
Buffy learns Riley has been going to a vampire brothel to have his blood sucked for pleasure. She confronts him, and he says he's going away with the military if she doesn't give him a reason to stay. She wants him to stay, but doesn't tell him in time.

5.11 - "Triangle"
Director: Christopher Hibler
Writer: Jane Espenson
Original Air Date: January 9, 2001
Emotions between Willow and Anya come to a boil over Xander, and they summon a troll (Olaf). The troll was Anya's ex-boyfriend whom she called vengeance upon. He tries to make Xander choose between the women, but Buffy sends him packing.

5.12 - "Checkpoint"
Director: Nick Marck
Writer: Doug Petrie & Jane Espenson
Original Air Date: January 23, 2001
The Watcher's Council withholds information about Glory from Buffy and make her go through a series of tests. Glory and the Knights of Byzantium target Buffy, and she realizes it's because she has power over them. She orders Quentin to give her the scoop on Glory, and it turns out she's not a demon - she's a god.

5.13 - "Blood Ties"
Director: Michael Gershman
Writer: Steven S. DeKnight
Original Air Date: February 6, 2001
Dawn discovers that she is the Key, becomes depressed, and runs away. She tells her tale to Ben, who morphs into Glory. Glory, not remembering Ben's thoughts, decides Dawn doesn't know the Key's location, and Willow and Tara teleport Glory elsewhere.

5.14 - "Crush"
Director: Dan Attias
Writer: David Fury
Original Air Date: February 13, 2001
Spike's profession of love for Buffy is spurned when Drusilla returns. He offers to kill Dru, but Buffy is unimpressed. He saves Buffy from Dru, but has his invitation to the Summers' home revoked.

5.15 - "I Was Made to Love You"
Director: James A. Contner
Writer: Jane Espenson
Original Air Date: February 20, 2001
A robot girlfriend, April, is abandoned by her creator, Warren. When April tries to kill Warren's current girlfriend, Buffy intervenes. Spike secretly coerces Warren into making him a robot of Buffy.

5.16 - "The Body"
Director: Joss Whedon
Writer: Joss Whedon
Original Air Date: February 27, 2001
Buffy and the gang are crushed by the death of Joyce. Dawn goes to the morgue to see the body and is attacked by a vampire. Buffy saves her and watches as Dawn reaches to touch Joyce.

5.17 - "Forever"
Director: Marti Noxon
Writer: Marti Noxon
Original Air Date: April 17, 2001
Buffy is comforted by Angel following her mother's death, although he can't stay. Dawn attempts to resurrect Joyce with the help of Spike and Doc, but stops part way through the ceremony after Buffy convinces her.

5.18 - "Intervention"
Director: Michael Gershman
Writer: Jane Espenson
Original Air Date: April 24, 2001
The Scoobies discover Spike's new robot toy; Glory's minions kidnap Spike, thinking he is the Key, and when they realise he isn't they torture him for information. Buffy and Giles go on a discovery quest about the origin of the Slayer. Buffy is told ominously that "Death is your gift".

5.19 - "Tough Love"
Director: David Grossman
Writer: Rebecca Rand Kirshner
Original Air Date: May 1, 2001
Willow and Tara get into an argument, leaving Tara vulnerable to be attacked by Glory, who thinks she is the Key. After discovering her error, Tara's brain is sucked out and Willow swears revenge.

5.20 - "Spiral"
Director: James A. Contner
Writer: Steven S. DeKnight
Original Air Date: May 8, 2001
Glory discovers the real Key, and Buffy and company must flee from her, and the Knights of Byzantium who are trying to destroy the Key. The gang race from Sunnydale in a caravan.

5.21 - "The Weight of the World"
Director: David Solomon
Writer: Doug Petrie
Original Air Date: May 15, 2001
Willow tries to reach the Slayer, who has been rendered catatonic by Dawn's abduction.

5.22 - "The Gift"
Director: Joss Whedon
Writer: Joss Whedon
Original Air Date: May 22, 2001
Buffy and the gang set out to rescue Dawn and fight Glory as the ritual commences. Also, Buffy finally realizes the meaning of "Death Is Your Gift."

Info from Wikipedia