Haddix, Margaret Peterson

Jonah, Katherine, Chip, and Alex suddenly find themselves in 1483 at the Tower of London, where they discover that Chip and Alex are Prince Edward V and Richard of Shrewsbury, imprisoned by their uncle, King Richard III, but trying to repair history without knowing what is supposed to happen proves challenging. Author's note includes historical facts about the princes and king.

When thirteen-year-olds Jonah and Chip, who are both adopted, learn they were discovered on a plane that appeared out of nowhere, full of babies with no adults on board, they realize that they have uncovered a mystery involving time travel and two opposing forces, each trying to repair the fabric of time.

When 13 year old friends Jonah and Chip, who are both adopted, find out that they were discovered on a plane that appeared out if nowhere, full of babies, with no adults on board, they realize that they have uncovered a mystery involving time travel and two opposing forces, each trying to capture them.

In a society that allows families to have only two children, a group of third-borns tries to save themselves and others like them.

In a future where the Population Police enforce the law limiting a family to only two children, Luke has lived all his 12 years in isolation and fear on his family's farm, until another "third" convinces him that the government is wrong.