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.

Tracker Bryn Aven's goal of becoming a member of the elite King's Guard is threatened when she is sent to stop Konstantin, a fallen hero who she once secretly loved, who appears to be kidnapping changelings.

Now living at Elvesden Manor under her real name of Rowan, Red attempts to put her past behind her, while fairy messengers try to convince her to participate once more in the changeling trade and she is haunted by dreams of an old enemy who is determined to exact his revenge.

"Meghan Chase has a secret destiny--one she could never have imagined. Something has always felt slightly off in Meghan's life, ever since her father disappeared before her eyes when she was six. She has never quite fit in at school or at home. When a dark stranger begins watching her from afar, and her prankster best friend becomes strangely protective of her, Meghan senses that everything she's known is about to change. But she could never have...

Three women in nineteenth-century Ireland bond over a shared effort to rescue a child from a superstitious community that believes that his trauma-related inability to speak indicates that he is a changeling responsible for a series of misfortunes. Nóra, bereft after the death of her husband, finds herself alone and caring for her grandson Micheál, who can neither speak nor walk. A handmaid, Mary, arrives to help Nóra just as rumors begin to spread...