On the morning of 21 November 1920, Jane Boyle walked to Sunday Mass in the church where she would be married five days later. That afternoon she went with her fianc to watch Tipperary and Dublin play a Gaelic football match at Croke Park. Across the city fourteen men lay dead in their beds after a synchronised IRA attack designed to cripple British intelligence services in Ireland. Trucks of police and military rumbled through the city streets as...