Eight months later, the girls have grown apart and put the incident behind them, although Cassidy still feels guilty about the whole thing. During the party held after graduation, the girls all receive a picture sent to their phones: a robed arm holding the bloody lug wrench Garrett used to kill Megan. Suspicion falls on Garrett, but Chugs insists he's changed after the incident. Jessica takes the lead and insists it is merely a sick joke by him and continues with the party. Megan's sister, Maggie, arrives, wanting to honor her sister's memory by attending the party. Later, Chugs leaves the party to go to her therapist appointment. Not knowing that her therapist was killed, she lies down to wait for him, but instead, Chugs is suddenly murdered by a mysterious killer. At the sorority's show