Buffy the Vampire Slayer

I Only Have Eyes for You (2x19)

:

As the Sadie Hawkins Dance nears, Buffy faces inner demons as she feels responsible for Angel's epiphany, meanwhile Sunnydale High is even more dangerous than usual as the ghost of a former student who killed his sweetheart and then committed suicide haunts the halls forcing people to relive the moments that killed them over and over.