On the Greek island of Vidos the past lingers like salt in the air. The inhabitants - former members of MI6 - are sent here to be forgotten. Exiled. Either too damaged or too compromised to be allowed to live freely. For years, residents make the best of their fate - old enemies reconcile, long-lost friends swim together in the warm sea and estranged lovers share a bed once more. But secrets bind tightly. And when one of their own washes up dead, alliances fracture and a tide of suspicion begins to rise.