| Large print edition (Thorndike Pr, December 1, 2010), cover price $23.99 | About this edition:
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.
| Simon & Schuster, August 25, 2009, cover price $16.99 | About this edition:
Jonah and Chip have barely adjusted to the discovery that they are actually the missing children of history when a time purist named JB sends them, along with Katherine and Alex, hurtling back in time to 1483.
| 1 reprint edition (Simon & Schuster, August 3, 2010), cover price $7.99 | About this edition:
Jonah, Katherine, Chip, and another boy, Alex, have no preparation before they are sent back to 1483 at the Tower of London, with the promise that they can return to the present if they can repair history.