After his parents, two sisters, and he have spent six years in a vast underground compound built by his wealthy father to protect them from a nuclear holocaust, fifteen-year-old Eli, whose twin brother and grandmother were left behind, discovers that his father has perpetrated a monstrous hoax on them all.

The Sinister-Winterbottoms, twins Alexander and Theo and their older sister Wil, find themselves at a mysterious summer camp where they meet other families whose parents are missing.

Dana is Abby and Zander's daughter, but growing up in New York City in the late nineteen fifties is not always easy, especially when you would like your own room separate from your twin sister--and when your beloved father dies and you are forced to move things just get worse.

New student Vi finds herself falling for Orsino, even though he wants Vi's help asking Olivia to the school dance.

Travis Bell and Emma Lewis reunite to help the FBI capture a serial killer in Pittsburgh, and they must again turn to a notorious teenage sociopath and his twin sister for help finding the murderer.

Trapped underground in the catacombs and made to transport the bones of ancient dragon rulers to the extracting room, where others extract the magical properties dormant in the bones, twin Thisbe must learn how to control her own fiery magic and use it to escape.

Twelve-year-old twins Ashley and Ryan are tested to the extreme when faced with a powerful avalanche while skiing in Wyoming's Grand Teton mountains. Includes survival tips from the National Avalanche Center and U.S. Forest Service.

Orphaned teens Pete and Al Montague and their adopted sister, Charlie, already known for solving mysteries in their small New England town, begin studying magic as they investigate a disappearance connected to a seventeenth-century witch.

In the aftermath of a sabotaged NASA rocket launch gone, Captain Calli Chase comes face-to-face with her missing twin sister, as well as the startling truth of who they really are, and now with a top secret program put in motion years ago has spun out of control, Calli embarks on a frantic search for the missing link between the sabotaged rocket launch and her predetermined destiny--a search that someone else is very interested in stopping.

A humorous oral history that chronicles twelve-year-old twins Reese and Claudia Tapper's heated competition to become sixth grade class president of their New York City private school, through text messages, photographs, screenshots, and more.