When thirteen-year-old Ellie's Grandpa Melvin, a world-renowned scientist in the body of a fourteen-year-old boy, comes for an extended visit, he teaches her that experimenting--and failing--is part of life.--

The Tuck family is confronted with an agonizing situation when they discover that a ten-year-old girl and a malicious stranger now share their secret about a spring whose water prevents one from ever growing any older.

When a terrible plague takes over the faerie realm and causes its inhabitants to age unnaturally quickly, Henry and Blue must find a cure in order to save the realm.

Serafina is summoned from her village to the magical cottage of a great aunt she has never heard of and learns that she is meant to become the new Baba Yaga, whose magical role is answering the first question any stranger might ask her with the truth.

When a Pincent Pharma truck is ambushed by the Underground, revealing not the expected supply of drugs but corpses, it becomes clear that the Longevity prescription for eternal youth is failing to live up to its promises, and when the Underground is blamed for releasing a deadly virus, the truth finally comes out.

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.

"Maria and her beloved lolo -- her grandfather -- spend their days drawing together, eating ice cream from Mang Basilio's ice cream cart and watching the maya birds outside their home in the Philippines. Until one day, Lolo stops feeling well and his drawing desk is left empty. Over time, he starts to forget names, words and even forget people entirely. Maria worries -- will her lolo forget about her? How can she reconnect with Lolo when he's unable...

Ellie's scientist grandfather has discovered a way to reverse aging, and consequently has turned into a teenager--which makes for complicated relationships when he moves in with Ellie and her mother, his daughter.

A child explores the ordinary life of his extraordinary great-grandfather, as expressed in his topiary garden.

Roscoe, a seasoned circus dog, is growing old. Tricks he once performed with ease are getting difficult. Luckily the new puppy, Rolly, is a quick learner. She helps out her old friend, who is worried that one day he'll get fired from the circus. When a crisis interrupts the Christmas performance, it's up to old Roscoe to save the day! His golden heart and incredibly sensitive nose come in handy. As Roscoe himself says, "I may forget everything else,...