A little more than a century from now, our world has been utterly transformed. After years of slowly overtaking the continent, rising floodwaters have obliterated America’s great coastal cities and then its heartland, leaving nothing but an archipelago of mountaintop colonies surrounded by a deep expanse of open water.

Stubbornly independent Myra and her precocious seven-year-old daughter, Pearl, fish from their small boat, the Bird, visiting dry land only to trade for supplies and information in the few remaining outposts of civilization. Seven years have passed since Myra''s oldest daughter, Row, was stolen by her father after a monstrous deluge overtook their home in Nebraska. Now, Myra discovers that Row was last seen in a far-off encampment near the Arctic Circle. Throwing aside caution, Myra and Pearl embark on a perilous voyage into the icy northern seas, hoping against hope that Row will still be there.

On their journey, Myra and Pearl join forces with fellow seekers who hope to build a safe haven together in this dangerous new world. But secrets, lust, and betrayals threaten their dream, and after their fortunes take a shocking—and bloody—turn, Myra can no longer ignore the question of whether saving Row is worth endangering Pearl and her newfound friends.

“Haunting and shocking.” —*New York Times–bestselling author Liv Constantine

“A soaring, brilliantly imagined novel about love and desperation, set in an astonishing new world that still feels utterly gripping and contemporary.” —New York Times–bestselling author Karin Slaughter