Julia is married to a successful psychiatrist, and they live in a beautiful house in Palm Beach, Florida. She is hoping to fall pregnant and life couldn’t be better. When her husband Todd begins regularly visiting a troublesome patient at night, she wonders about his fidelity. Delving into his records at the home consulting room, Julia finds disturbing news of something much bigger than expected. One of the patients harbours a terrible secret and the woman Todd regularly visits seems somehow involved. Julia begins to notice a woman watching her from amongst the dunes, who disappears when Julia approaches. In the meantime, a stranger has been following Julia, and her life descends into a chilling search for what is really happening. Eventually, she must not only deal with a dangerous mystery but also something she discovers about herself.