Two years after the disappearance of their father, Sapphire and Conor, having moved with their mother to the town of St. Pirans, try to make a new life for themselves, but Sapphire, unlike her mother and brother, finds it increasingly difficult to adjust to her new circumstances and is drawn more and more to the undersea world of Ingo.

In 1899 on an island off the coast of Maine, fifteen-year-old May learns why she has always felt different from the other girls in her small town, but must keep hidden that she is a mermaid or risk attracting the attention of a dangerous hunter, and losing a boy for whom she cares.

In a cottage high atop Llanfair Mountain, sixteen-year-old Clara lives with her sister, Maren, and guardian Auntie. By day, they gather herbs for Auntie s healing potions. By night, Auntie spins tales of faraway lands and wicked fairies. Clara s favorite story tells of three orphan infants Clara, who was brought to Auntie by a stork; Maren, who arrived in a seashell; and their best friend, O Neill, who was found beneath an apple tree. One day, Clara...

Two years after their adventures in The Land of the Silver Apples, the apprentice bard Jack and his Viking companion Thorgil confront the malevolent spirit of a vengeful mermaid and begin a quest that casts them among the fin folk of Notland.