The last time Margot Callaway saw her sister, Lottie, the girl was twelve and clinging to their blood-covered mother over the asphalt in a gas station parking lot.
Reeling and in shock, Margot fled her home state of Florida, choosing a path that would take her far away from the pain. She left everything behind, including Lottie. Now, seven years later, mysterious happenings on the island lead Margot to the realization that she must return home and face the ghosts of their shared past.
Will Margot and Lottie have what it takes to protect each other? Can Lottie forgive Margot for running away?