As teenagers growing up on the island, Georgia, Kate and Bride had idyllic summers of sun, swimming, laughter and drugs. Until one summer, their last on the island together, when Reagan turned up and Bride disappeared, never to be seen again. Years later Georgia returns home, and picks up her friendship with Kate and Reagan, who returned to the island a while ago. What happened to Bride that summer has far-reaching effects on the way that Kate and Georgia live now. Stories of the girls' shared childhood are interspersed with passages in the present. The events of the past cannot be forgotten and are fast catching up with them. And how much does Boo, Bride's 'slow' brother, really know? Then one terrible, dramatic night Kate and Georgia share in a shocking moment that is a direct consequence of what happened all those years ago.