Twins Jessica and Liz face the ups and downs of life at Sweet Valley High.

Twins Jessica and Liz face the ups and downs of life at Sweet Valley High.

Soon after the arrival of a mysterious exchange student, who they're convinced has something to do with a murder they committed one year earlier, three ruthless high school queen bees begin to prematurely age.

Soon after the arrival of a mysterious exchange student, who they're convinced has something to do with a murder they committed one year earlier, three ruthless high school queen bees begin to prematurely age.

Jules balances her life of being a college student, while serving up vigilante justice on her school's campus. Until Ophelia, a computer hacker, discovers her secret and entangles herself in Jules' quest for vengeance.

Jules balances her life of being a college student, while serving up vigilante justice on her school's campus. Until Ophelia, a computer hacker, discovers her secret and entangles herself in Jules' quest for vengeance.

Kate lives a secluded life—until her troubled daughter shows up, frightened and covered in someone else's blood. As Kate unravels the shocking truth, she learns just how far a mother will go to try to save her child.

A year ago, vampires, werewolves and zombies mysteriously descended upon the streets of California's San Fernando Valley. The Undead Task Force (UTF) was created to combat the emergence of monsters.