Cassie lives with her father in a New Jersey beach town. Dad spends most of his time closeted away with his insect collection. He's an ex-Navy SEAL who suffers from PTSD and its concomitant anger issues. Frankly, Cassie finds him best avoided. Cassie herself is doing ok, despite a recent tragedy. Until, that is, she finds a dismembered foot on the beach, thought to be from a victim of a serial killer stalking the locality.