Elle Edwards, who has been told she's a product of her mother's sinful mistake, has never gone to school, never met a teenager her own age, never even been allowed off of her grandparents' property. Convinced that their granddaughter is infected with evil, Myra and Prescott Edwards believe that only the harshest child-rearing methods will prevent Elle from becoming an instrument of the devil.

Emmie Wilcox was only six when her sister, Roxy, was thrown out of their New York City apartment. Their stern father's military style left no room for rebellion, and Roxy was continually defiant and rebellious. Emmie is obedient, respectful. Two sisters, total opposites - yet Emmie is secretly obsessed with the mystery and imposed silence surrounding Roxy. She wants excitement, and being a good girl all the time is harder than it seems. Finally, Emmie goes behind her father's back to track down and spy on the sister she can't help but be fascinated with.

Sixteen-year-old Sage is a lonely child. Her adoptive parents watch her obsessively, as if studying her for warning signs of...something. And maybe they're right to - even she can't make sense of the strange things she sees and hears. She possesses knowledge that other teenagers don't, that her parents and teachers - no adult - could possibly have. So when Sage finally makes a friend who understands her alarming gift, he becomes her confidant, a precarious link to the truth about who she really is.

Ever since Fern could remember, she and her mother have lived as servants in Wyndemere House, the old Gothic mansion of the Davenport family. She may have been a servant, but Fern developed a sweet friendship with Dr. Davenport's son, Ryder, and she was even allowed free range of the estate. But Dr. Davenport has remarried, and his new wife has very different ideas about a servant's place. Yet, for all her wrath, the cruel woman cannot break the mysterious bond between Ryder and Fern.

Like everyone else in Palm Springs, Gish idolizes her smart, beautiful, kind older sister. Even their parents compare Gish unfavorably to Gloria—threatening to send her to boarding school once the more perfect sister leaves for college.