Prophecy Girl

Prophecy Girl is the first season finale and twelfth episode of "Buffy the Vampire Slayer". It was aired in May 1997. It was written and directed by series creator Joss Whedon.
Plot.
Giles reads a book that the Slayer must die from the Master. Buffy was killed by the Master. Angel helped revive Buffy, making the prophecy reversed. Buffy encountered the Master and killed him, leaving only his bones behind.
Production.
The episode and the other season one episodes were made out of order but aired in the story's chronology. It was intended to be the series finale before the WB ordered four extra seasons and UPN gave the show two more seasons.
Reception.
Many people loved the season finale for being satisfying and series creator Joss Whedon considered it as one of his favorite episodes.