Despite problems at home, sixteen-year-old conjoined twins Tippi and Grace are loving going to school for the first time and making real friends when they learn that a cardiac problem will force them to have separation surgery, which they have never before considered.

Having felt deprived all her life of schooling, friends, mother, and even her name by her twin sister, Louise finally begins to find her identity.

After thirteen-year-old Conner returns to the Land of Stories and reunites with his twin sister, Alex, who is training to become the next Fairy Godmother, war breaks out in the fairy-tale world.

While armies of the Shadowrealms gather and Machiavelli goes to Alcatraz to kill Perenelle Flamel, fifteen-year-old twins Sophie and Josh Newman accompany the Alchemyst to England to seek Gilgamesh.

Through the mysterious powers of a cherished book of stories, twins Alex and Connor leave their world behind and find themselves in a foreign land full of wonder and magic where they come face-to-face with the fairy tale characters they grew up reading about. But after a series of encounters with witches, wolves, goblins, and trolls alike, getting back home is going to be harder than they thought.

Back in London, fifteen-year-old twins Sophie and Josh Newman must determine whom they can and cannot trust as they search for both Scatty and an immortal who can teach Josh the magic of fire, while Doctor Dee and Machiavelli continue to seek power.

Everyone in Vallen knows that ice wolves and scorch dragons are sworn enemies who live deeply separate lives. So when twelve-year-old orphan Anders takes one elemental form and his twin sister, Rayna, takes another, he wonders whether they are even related. Still, whether or not they're family, Rayna is Anders's only true friend.

The magical world of Artimé is gone and the Unwanteds are looking to Alex Stowe for answers, but while his twin brother Aaron continues to build his army in Quill, a very dangerous common enemy is revealed.

"Following clues left by their missing father, twelve-year-old twins Bickford and Rebecca Kidd sail from the Caribbean to New York City with their siblings to finish the dangerous quest of their world-famous treasure-hunting parents"--Provided by publisher.

When the magic of Zahramay Falls runs dry, twin genies Shimmer and Shine search for a special staff that will help restore its power.