The Devil Within (2010)

Director: Tom Hardy

A night of sex, drugs and partying in the Hollywood Hill's is the perfect setting for Serina's 18th birthday - until this high school pool party goes horribly wrong when an uninvited guest begins killing everyone

Cast

Elizabeth Di Prinzio

Sirena

Karynn Moore

Casey

Sarah Kathryn Harrison

Doug

Bill Oberst Jr.

Principal Edwards

Grey Damon

John

Elizabeth Bell

Karen

Alex Aldridge

Kyle

Jamie Lea Willett

Sara

Peyten Aldridge

Rachel

Jennifer Erin Bailey

Lisa (as Jen Bailey)