In a future where the Population Police enforce the law limiting a family to only two children, Luke has lived all his twelve years in isolation and fear on his family's farm, until another "third" convinces him that the government is wrong

Thirteen-year-old Nina is imprisoned by the Population Police, who give her the option of helping them identify illegal "third-born" children, or facing death

In the future, false identities, government lies and death threats keep Luke from being safe with his new identify when the younger brother of the boy whose name Luke has taken shows up at school

After secretly receiving injections at the age of 100 that are meant to reverse the aging process, Melly and Anny Beth grow younger until, as teenagers, they try to find a guardian to take care of them as they return to infancy

Twelve-year-old Zola, who has a surprising connection to Jessie, discovers that she is stuck in a fake utopian future, and that those around her are counting on her to help them escape. Twelve-year-old Zola thinks she has the perfect life. She thinks everyone does, now that it's 2193, and humanity has solved all its problems. Insta-Closets deliver new clothes every morning, Insta-Ovens deliver gourmet meals on demand, and virtual reality goggles...

A twelve-year-old girl raised in a foster village is returned to her biological parents, and discovers home is not what she expected it to be.

In a war-torn future United States, fifteen-year-old Tessa, her childhood friend Gideon, now a traumatized military hero, and Dek, a streetwise orphan, enter enemy territory and discover the shocking truth about a war that began more than seventy-five years earlier.

Time travelers Jonah and Katherine arrive in 1611 to rescue missing child John Hudson, son of the explorer Henry Hudson, but just as the mutiny on the Discovery is supposed to start, Jonah and Katherine's knowledge of history is tested once again, and they fear that more is at stake than just one boy's life. Author's note includes facts about Henry Hudson's explorations

After returning the missing children from history to their original time periods, thirteen-year-old Jonah must save time itself when aviator Charles Lindbergh mysteriously appears and kidnaps Jonah's sister.

When Jonah and Katherine travel to early 1900s Switzerland and Serbia to return Albert Einstein's daughter, Lieserl, to history, her mother Mileva grasps entirely too much about time travel and has no intention of letting her daughter go