#1 New York Times bestsellerA sweeping stand-alone fantasy romance from Kiera Cass, author of the beloved, bestselling Selection series.Kahlen is a Siren—bound to serve the Ocean by luring humans to their watery graves with her voice, which is deadly to any human who hears it. Akinli is human—a kind, handsome boy who’s everything Kahlen ever dreamed of. Falling in love puts them both in danger… but will Kahlen risk everything to follow her heart?This star-crossed YA romance i