The story of the Rising itself; the way in which the clandestine and separatist Irish Republican Brotherhood infiltrated the Irish Volunteer Movement; the attempt to secure assistance from Britain's enemy Germany; the arrest of Roger Casement and the botched gun-running off the coast of Ireland immediately before the Rising; the confusion surrounding the order and countermand for a call up of the Irish Volunteers on Easter Sunday; British Intelligence awareness of what was planned and an apparent lack of readiness to tackle what happened on Easter Monday.