Iselia "Seelie" Graygrove looks just like her twin, Isolde...but as an autistic changeling left in the human world by the fae as an infant, she has always known she is different. Seelie's unpredictable magic makes it hard for her to fit in--and draws her and Isolde into the hunt for a fabled treasure. In a heist gone wrong, the sisters make some unexpected allies and find themselves unraveling a mystery that has its roots in the history of humans...

Stuck in high school until her eighteenth birthday, demi-god Neve is eager to join her sisters in their fight against evil, but when she meets Alexandria, a girl with a dark secret, Neve must choose between duty and love.

Beezus' biggest problem is her 4-year-old sister Ramona. Even though Beezus knows sisters are supposed to love each other, with a sister like Ramona, it seems impossible.

On their second adventure through the magic mirror Abby and Jonah find themselves in the Cinderella fairy tale--and that is when things start to go really wrong.

Thirteen-year-old fraternal twins Dallas and Florida have grown up in a terrible orphanage but their lives change forever when an eccentric but sweet older couple invites them each on an adventure, beginning in an almost magical place called Ruby Holler.

"In this conclusion to the Three Dark Crowns series, three sisters will rise to fight as the secrets of Fennbirn's history are laid bare. Allegiances will shift. Bonds will be tested. But the fate of the magical island lies in the hands of its queens. It always has"--

Eleven-year-old Gregor and his younger sister, Boots, return to the Underworld beneath New York City to find the cure for a terrible plague that threatens the life of their mother, as well as the lives of the people, bats, and rats who populate the underworld.

Avoiding relationships to protect her sensitive heart, plus-sized Molly supports her once-cynical twin, Cassie, when the latter has her own bout of lovesickness, a situation that is complicated by sibling dynamics and an unexpected romantic triangle.

a The wackiest road trip in history continues as the McDonald twins travel the Southwest dodging nefarious villains and visiting weird but true American landmarks.

When eleven-year-old Gregor and his two-year-old sister are pulled into a strange underground world, they trigger an epic battle involving men, bats, rats, cockroaches, and spiders while on a quest foretold by ancient prophecy.