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Posted: 10/7/2011
Katey, a graduated sorority sister, is peer-pressured by her six sorority sisters into pulling a prank on their strict house mother, Mrs. Slater, who is known for carrying a sharp walking cane. The prank goes awry and Mrs. Slater is shot. The girls all agree to hide Slater's body in their dirty swimming pool until a graduation party being held in the house is finished. As the party begins, a guest wanders around the pool and is subsequently impaled through the neck by an unknown figure, wielding Slater's cane, and dragged away.
When other guests attempt to throw a girl in the pool, they are stopped by the sorority sisters. Later, to prevent the pool lights from coming on revealing Slater's body, Stevie, one of the sorority sisters is forced to go into the power room of the house located in the basement. While doing so, she is murdered. Sorority sister Katey meets her date for the party, Peter, with whom she neglects as the other girls worry why Stevie hasn't returned from the power room yet.
The sorority sisters then find Slater's body which has mysteriously been moved to the attic, from whence it falls. Morgan, an attractive yet not-so-bright sister, hides in her room where she is murdered. Having found Slater's body, the sisters decide to bury it in a nearby graveyard. Meanwhile Katey explores the attic of the house and discovers several children's toys. The sister Diane is killed while waiting in her van for the other girls. Jeanie, the most nervous member of the group, is also attacked but manages to escape. However, after informing Katey about the attack, Jeanie is chased into the upstairs bathroom and killed.
The party goers finally depart, leaving Katey and Peter in the house. Katey tells Peter to go home and finds a number card that once belonged to Mrs. Slater. The card has the phone number for a Dr. Beck who soon arrives and asks Katey where Slater is. The two discover the bodies of Stevie, Morgan and Diane in the pool.
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