When marine keeper Isla Blake rescues a breathtaking merman from poachers, she thinks she’s found a rare, gentle creature of the deep. She names him Noyah, brings him into her world, and slowly lets him into her life. But the closer they grow, the stranger his behavior becomes—and the more the sea seems to change around him. When Isla’s past comes crashing back onto Blackcliff, one terrifying question remains: what exactly did she save?
