Zohra Dasgupta is a young postwoman going about her rounds in Bromsgrove when, one day, she finds herself delivering a letter to an address she’s never heard of. Through a tangle of bushes set back from the road she discovers a pair of old railway carriages, mouldering and shabby, with two elderly brothers living in them. Zohra is intrigued by the brothers’ shocked reaction to the letter she hands over.
The brothers – Nick and Johnny Greenwood, estranged for years but living side by side – see the handwriting of the sister they believed to have been dead for nearly fifty years. But if Debs wasn’t murdered one night back in 1969, then whose body was found? And can the woman who is now writing to them, declaring her intention to visit, be trusted?