So she strikes a bargain with an aging storekeeper that in exchange for finding a bride for his son Clara can have his house to run a boardinghouse. But Dr. Saul Reed is not interested in getting tied down to Buttonwood in the middle of nowhere, and he certainly has no plans for marriage. Can he shake his determined matchmaker, or will he strike a new bargain with Clara?

    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 discovers shimmering scales just beneath her sister’s skin: Maren is becoming a mermaid and must be taken to the sea or she will die. So Clara, O’Neill, and the mermaid-girl set out for the shore. But the trio encounters trouble around every bend. Ensnared by an evil troupe of traveling performers, Clara and O’Neill must find a way to save themselves and the ever-weakening Maren.And always in the back of her mind, Clara wonders, if my sister is a mermaid, then what am I?