Until their mother vanished, the Greystone kids, Chess, Emma, and Finn, knew nothing about the other world. Everything is different there. It’s a mirror image, except things are wrong. Evil. Their mother tried to fix it, but she and an ally got trapped there along with Ms. Morales, their friend Natalie’s mom. Now the four kids, brave Chess, smart Emma, kind Finn, and savvy Natalie, are determined to rescue everyone. To do so, they have to go back: into the other world, where even telling the truth can be illegal. But in such a terrifying place, Chess doubts he can ever be brave enough. Despite all her brains, Emma can’t seem to break the code. With everything spiraling out of control, Finn has to pretend he’s okay. And for Natalie, the lies of the other world include some she wishes were actually true. What if she’s gotten so used to lying she no longer knows what to believe?

Chess has always been the protector over his younger siblings, Emma and Finn. They have been a happy family, just the three of them and their mom. Everything changes when reports of three kidnapped children reach them, and they're shocked by the startling similarities between themselves and these strangers. Before they can question their mom about it, she takes off on a sudden work trip. Puzzling clues left behind lead to complex codes, hidden rooms, and a dangerous secret that will turn their world upside down.

Many surprises await twelve-year-old Edwy Watanaboneset when the Freds return him to Cursed Town, including that he has siblings in Refuge City who he will join in boarding school.

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.

Jonah was able to save all of time from collapsing but in doing so gained a twin brother, Jordan, who must learn what has happened and do his own part to save time--and his parents.

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.

Jonah, thirteen, and Katherine, eleven, travel through time to 1918 Russia just as Alexei, Anastasia, and the rest of Tsar Nicholas II's family is about to be executed. Author's note includes facts about the Romanov's and the mystery surrounding their deaths.

After her father is convicted of embezzlement, Becca Jones, fourteen, and her mother flee Georgia for small-town Ohio but three years later she learns that his misdeeds may have jeopardized not just her future but also her life.

Jonah, thirteen, and Katherine, eleven, travel through time to 1918 Russia just as Alexei, Anastasia, and the rest of Tsar Nicholas II's family is about to be executed. Author's note includes facts about the Romanov's and the mystery surrounding their deaths.

While playing in the championship softball game, star pitcher KT Sutton blacks out and awakes to a changed world where the roles of academics and sports at her middle school have flipped, making talented athletes, such as KT, outcasts and brainy nerds popular.