Years later, a small, stubborn rumor began to circulate along the waterfront—seamen’s talk and fisher-lore—that if you stood on certain rocks with the tide at its lowest, you could hear a distant hum. It sounded like a song and like waves and like someone humming while they worked. It reminded the listeners of the way Ari had eaten corn kernels one by one and the way she had given a compass to a woman who liked paper boats.