In a field outside Bromsgrove, two elderly brothers live in adjoining railway carriages. No one visits and they never speak to each other. Until the day Zohra Dasgupta, a young postwoman, delivers an extraordinary letter - from a woman claiming to be the sister they thought had been murdered fifty years earlier. So begins an intriguing tale: is this woman an impostor? If she's not, what did happen all those years ago? And why are the brothers such...