Second-graders Arlene and Ilene Kelly are twins, identical twins to be exact, and they love being a pair. They love to dress alike, they have identical pet ferrets, and they do everything together. But being a twin is not always easy. And when Arlene gets sick and has to visit the hospital, the twins each find out what it's like to be one instead of two. But whether they're together or apart, Arlene and Ilene know they're lucky to have each other....

Can a mysterious sea creature save eleven-year-old Jamie's very sick twin brother?

A girl tells what it is like living with her twin brother who has autism and sometimes finds it hard to communicate with words, but who, in most ways, is just like any other boy. Includes authors' note about autism.

The epic conclusion to Chris Colfer's #1 New York Times bestselling series The Land of Stories!
In the highly anticipated conclusion to the Land of Stories series, Conner and Alex must brave the impossible. All of the Land of Stories fairy tale characters—heroes and villains—are no longer confined within their world!
With mayhem brewing in the Big Apple, Conner and Alex will have to win their biggest battle yet. Can the...

Seven-year-olds Bradley, Brian, Nate, and Lucy make observations and gather clues that convince them that their older siblings, cousin, and animals have been captured by hungry space aliens.

Follow the adventures of Nan and Burt, and Freddie and Flossie, two sets of fraternal twins in the Bobbsey family.

Follow the adventures of Nan and Burt, and Freddie and Flossie, two sets of fraternal twins in the Bobbsey family.

"Cassie and Caitlyn Waters may be identical twins, but everything else about them is completely different. The only thing they can agree on is that neither of them is happy that have to move to middle-of nowhere Aura, Texas. Caitlyn tries to put a positive spin on getting a fresh start, but Cassie's busy plotting how to convince their mom they should move back to the big city as quickly as possible. But being the new kids isn't their only challenge....

"In a snow-white palace far away live two mischievous twins, Prince Leon and Princess Luna. At midnight, they sneak out of their room on a secret quest. They plan to find many special things. Will you join them on their search? A creative seek-and-find book, in which you compare different rooms before and after the twins arrive. For young and old sleuths ages 4 years and up."--Back cover.

Lucy and Henry are brother and sister. They may be twins but that doesn't mean they do everything the same way.