Casey "Cici" Cooper, played by Sarah Michelle Gellar, is a character in the film Scream 2.
Cici is a student at Windsor College. While alone in her house, Cici is attacked by Ghostface. She runs upstairs pursued by the killer, who throws her through a glass door on to a balcony and stabs her twice in the back before picking her up and throwing her over the balcony to her death.
From her murder and the preceding murders of Phil Stevens and Maureen Evans, Gale Weathers and Dewey Riley deduce that the new killer is choosing targets with names similar to those of the victims of the original Ghostface killers, Billy Loomis and Stu Macher.