The island swims away from them, fading into an ever more miniature version of itself, until it is just a flash of memory, held differently, imperfectly by each passenger. Tom watches Isabel, waits for her to return his glance, longs for her to give him one of the old smiles that used to remind him of Janus Light – a fixed, reliable point in the world, which meant he was never lost. But the flame has gone out – her face seems uninhabited now.

