Lured by mysterious forces back to her childhood home, Sophia investigates the unsolved disappearances of several community members, including the mother who saved her from a near-drowning.

Sophia's first memory is of drowning: the darkness of the water, the briny taste as it fills her throat. She remembers her mother pulling her to safety before disappearing forever. But Sophia has never been in the ocean... and her mother died years ago in a hospital. Or so she has been told her whole life. Clues lead her to the island of Bitter Rock, Alaska, where she talks her way into a summer internship at the Landon Avian Research Center, the same center her mother worked at right before she died. She meets Liam, whose mother runs the LARC, as well as Abby, who's following a mystery of her own: people have been vanishing from Bitter Rock for decades, leaving only their ghostly echoes behind. When it looks like their two mysteries might be one and the same, Sophia vows to dig up the truth, no matter how many lies she has to tell along the way. -- adapted from jacket and Goodreads info