Cal McGill watches the young woman through the dirty windscreen of his Toyota. There's something compelling about her stillness, about the length of time she has been standing square-shouldered, erect, staring out to sea, like an Antony Gormley statue waiting for another of its cast-iron tribe to emerge from the deep. What has brought her to this remote beach, he asks himself. Is she a kindred spirit who finds refuge by the shore? Idle curiosity soon turns into another investigation for oceanographer and loner McGill as he embarks on a quest to discover why, 26 years earlier, another young woman walked accross this sweep of sand and into the waves, apparently drowning herself and her unborn child.