Five years after almost drowning, Olivia Cathart returns home to Caldwell Beach determined to face her fears and take some risks -- not just by swimming, but by opening her heart. Hoping to rekindle her friendships, she's excited about a carefree summer with her best friends Keely and Miles. But life in the sleepy town has changed, and no one and nothing is as it seems. When a series of startling crimes threaten Olivia's fragile state, she is plunged into a terrifying game of cat and mouse. Her only solace from the chaos is West, Miles's disowned and ruggedly handsome brother, but even he can't answer the question on everyone's minds -- is Olivia really in danger or is it simply all in her head?