Around seventy years ago, Mahmood Mattan was hanged for the murder of Lily Volpert, a shopkeeper, who happened to be Jewish and under five-foot tall. His conviction was found to be unsafe by the three Appeal Court judges in 1998 and he was exonerated. In the Epilogue, Mahmood’s son Omar was found dead on a beach in Caithness, Scotland. He’d said in an interview: ‘Until I was eight, I was told my father had died at sea. Then one day the Salvation...