Detective John Gallagher is pulled from fieldwork into a dull statistics unit in 1966 England, but a hidden threat lurks behind the World Cup celebrations, leading to unexpected danger.

Almost a decade after finding himself working for a shadowy Government department, ex-Detective John Gallagher is sent on a task that will become his most testing yet. Armed only with a two inch revolver, 12 bullets, some cryptic clues and a sense of humour, his mission is to assist a high ranking East German foreign intelligence operative to defect to the West.