Episode Overview
When an invisible menace starts attacking students and faculty at Sunnydale High, the Scooby Gang traces the problem back to Cordelia.
Guest Stars
David Boreanaz
Angel
Clea DuVall
Marcie Ross
Armin Shimerman
Principal Snyder
Mercedes McNab
Harmony Kendall
Ryan Bittle
Mitch
Denise Dowse
Ms. Miller
Skip Stellrecht
Agent Manetti
Mark Phelan
Agent Doyle