Amazon.com Product Description (ISBN 0689853386, Paperback)

In the year 2000 Melly and Anny Beth were old and ready to die. But when offered the chance to be young again by participating in a top-secret experiment called Project Turnabout, they agreed. They received injections that made them grow younger, and it seemed like a miracle. But when the injections that were supposed to stop the unaging process turned out to be deadly, Melly and Anny Beth decided to run for their lives.

Now it is 2085. Melly and Anny Beth are teenagers. They have no idea what will happen once they are babies again, but they do know they will soon be too young to take care of themselves. They need to find someone to help them before time runs out, once and for all....

Amazon.com Product Description (ISBN 141693653X, Mass Market Paperback)

In the year 2000 Melly and Anny Beth had reached the peak of old age and were ready to die. But when offered the chance to be young again by participating in a top-secret experiment called Project Turnabout, they agreed. Miraculously, the experiment worked -- Melly and Anny Beth were actually growing younger every year. But when they learned that the final treatment would be deadly, they ran for their lives.

Now it is 2085. Melly and Anny Beth are teenagers. They have no idea what will happen when they hit age zero, but they do know they will soon be too young to take care of themselves. They need to find someone to help them before time runs out, once and for all....

Amazon.com Product Description (ISBN 0689821875, Hardcover)

"It isn't natural for you to be younger than your great-grandchildren. We messed around with nature, and we shouldn't have."

Melly and Anny Beth both lived normal lives throughout the twentieth century. But in 2000, when they are old and ready to die, they are selected to participate in Project Turnabout and are given an injection to make them grow younger. At some point these participants are to receive another injection, which will stop the unaging process.

But everyone who receives the second shot dies.

Now, in 2085, Melly and Anny Beth are both in their teens and living on their own. They know they will need someone to take care of them when they grow too young to care for themselves. Time is running out.

In this spellbinding race against time, award-winning author Margaret Peterson Haddix explores a scientific experiment gone wrong, and the morality of immortality.