Synopsis:
The world of nightmares and reality become one when everyone in Sunnydale is living out their worst fears. While Xander comes to school in his underwear and Giles is unable to read, Buffy must unravel the mystery before reality folds completely into the world of nightmares.

Written by: Joss Whedon (teleplay by David Greenwalt)
Directed by: Bruce Seth Green
Original Airdate: May 12, 1997