<p>Marine biologist Hannah Bowman once loved the sea but when it took everything from her she walked away from it. </p><p> </p><p>However she didn't walk far enough away. </p><p> </p><p>Estranged from the ocean Hannah now lives alone in a cottage on the grounds of a decommissioned lighthouse in her hometown of Stone Harbor. A barista by day Hannah has few friends. A recluse by night Hannah's sleep is plagued by nightmares. <br> </p><p>For three years she has resisted the lure of the sea. But Hannah Bowman's self-imposed exile ends in a wave of unforgettable terror when the Spines of the Deep come calling.</p>