Seventeen-year-old Nora Thomas carries the burden of childhood loss and trauma, navigating life shrouded in solitude. A school trip introduces her to Claire Tucker, who is everything Nora's not. Optimistic, outgoing, self-confident. She's a magnet to others, including the mysterious Ethan St. James, Claire's best friend since freshman year. When Nora and Claire begin an unlikely romance in another city, Ethan, absent for weeks, suddenly reappears. A brutal murder follows in his wake and the girls soon discover that some secrets are best left unexplored.