Buffy the Vampire Slayer: Nightmares

"Testosterone is a great equalizer. It turns all men into morons."

- Rupert Giles

"Nightmares" is the title to the tenth episode from season one of the supernatural action series Buffy the Vampire Slayer. It was directed by Bruce Seth Green and written by Matt Kiene and Joe Reinkemeyer. It first aired on the WB Network on May 5th, 1997. In this episode, a group of students from Sunnydale High School fall prey to a ritual where they begin taking on the predatory characteristics of hyenas. Even Xander Harris is not immune to this mystical effect and its up to Buffy Summers and the rest of the Scoobies to break the spell and return Xander to normal.