In a future where genetic engineering has cured humanity of all diseases and defects but has also produced a virus that kills all females by age twenty and all males by the age twenty-five, teenaged Rhine escapes her forced marriage and journeys back to New York to find her twin brother.

In futuristic Satellite City, fourteen-year-old Cosmo Hill escapes from his abusive orphanage and teams up with three other people who share his unusual ability to see supernatural creatures, and together they determine the nature and purpose of the swarming blue Parasites that are invisible to most humans.

Following her mother's death in the early 1900s, thirteen-year-old Harry lives on Aunt Sarah's farm where an accident with her spirited colt leaves her a changed young woman.

Fourteen-year-old Amy Cahill and her younger brother Dan thought they could return to their regular lives when they found the 39 clues. But the Vespers, powerful enemies, will stop at nothing to get the clues. And with the Vespers rising, the world is in jeopardy.

"So much has been accomplished. Lillian Walsh has stepped out courageously beyond what she'd ever dreamed of being able to achieve. She and her newly rediscovered sister, Grace, have settled three children from England into new Canadian homes and are prepared to place two more just after the New Year, when it happens--another painful disruption. A white lie the sisters used to protect some orphans has resulted in an official complaint and a letter...

The Alden children visit a family friend at his apple orchard which is rumored to be haunted, but instead of a ghost they find that some of the family's valuable antiques are being stolen.

Nine-year-old Nicholas Benedict, an orphan afflicted with an unfortunate nose and with narcolepsy, is sent to a new orphanage where he encounters vicious bullies, selfish adults, strange circumstances, and a mystery that could change his life forever.

Another year at Bathory High goes bad for Vlad Tod when his former friend Joss, now a vampire slayer, returns to town, a mysterious and powerful new vampire, Dorian, arrives with a thirst for Vlad's blood, and archenemy D'Ablo brings Vlad's Uncle Otis totrial.