changelings

After nine-year-old Tam's baby sister is stolen away by faeries and replaced by a goblin baby, he must journey to the land of the faeries to retrieve her and bring her back home.

Young Mollie traverses eerie, perilous lands to retrieve her baby brother, Thomas, from the Kinde Folke, malicious sprites who snatched him and left a hideous changeling in his place.

Twelve-year-olds Tinn and Cole, raised as human twins in sleepy Endsborough, risk their lives in the Wild Wood, Oddmire Swamp, and the Deep Dark to learn which is a goblin changeling with an important mission.

Morgan Sparks and her boyfriend Cam have been best friends since they were children, but just before their shared sixteenth birthday, Cam confesses that he is a fairy who was switched at birth with a human child, and now the fairies want to switch them back.

Sixteen-year-old Mackie Doyle, a being from another world who was swapped with a human child when he was a baby, struggles with his allergies to iron, blood, and consecrated ground and wants desperately to live like a normal teenager, and when his crush Tate's sister disappears, Mackie sets out to find her and gets a chance to find his rightful place in the world.

Bedeviled by evil fairies that only she can see, thirteen-year-old Tanya is sent to stay with her cold and distant grandmother at Elvesden Manor, where she and the caretaker's son solve a disturbing mystery that leads them to the discovery that Tanya's life is in danger.

"When babysitter Rebecca discovers that a sinister ruler of darkness has replaced the baby with a changeling, she and her friends must save him by surviving a chilling journey through the Nightmare Realm"--OCLC.

At seventeen, Wendy Everly learns that she is actually a changeling troll, who must be returned to her rightful home, where she learns she is the princess of the Trylle tribe and will become queen. With the threat of war looming, Wendy must fight to protect her people from their enemies and make difficult choices in the best interest of the Trylle.

"A young troll named Hawthorn is stolen from Fairyland by the Golden Wind, and becomes a changeling in our world, a place no less bizarre than Fairyland in his eyes"--Provided by publisher.

Bryn Aven journeys to the realm of the Skojare to protect their people from a brutal enemy, but as she delves deeper into the Skojare world, she unravels a long-hidden secret about the Kanin kingdom.