The last of the Greenwoods / Clare Morrall.

At the bottom of a field, two elderly brothers live in adjoining railway carriages, yet never speak to each other. Until one day Zohra Dasgupta, a young postwoman, delivers a shocking letter - from a woman claiming to be their sister, who was murdered in 1969. Is this an impostor, or have Nick and Johnny Greenwood been misled for decades? Now they are forced to revisit long-suppressed traumas... Zohra also has painful memories. Once an outgoing teenager, she will see only one friend from her schooldays: laid-back Crispin, who she's helping to restore an old railway line on his father's land. For which, as it happens, they need some carriages...

Adult.