Episode 85 of "Buffy, the Vampire Slayer"
s05e07 Fool for Love
Title: Fool for Love
Original Air Date: 11/14/2000 on WB
Director: Nick Marck
Writer: Douglas Petrie
Guest Stars: Edward Fletcher (Male Partygoer), Katherine Leonard (Female Partygoer), Matthew Lang (2nd Male Partygoer), Chris Daniels (Stabbing Vampire), Kenneth Feinburg (Chaos Demon), Steve Heinze (Vampire), Ming Liu (Chinese Slayer), April Weeden-Washington (Subway Slayer)
Plot Outline:
When a vampire impales Buffy with her own stake, she wants to find out how her predecessors have lost in battle. Because of Giles' lack of info on the final battles of previous Slayers she turns to the only person she knows who has killed two: Spike. In exchange for cash, he not only details why his victims lost their battles, but his personal history as a vampire. Meanwhile, Joyce's condition worsens and she has to spend the night at the hospital.