The Ultras : It is the 1970s and the covert war in Ireland is at its height. Intelligence and military agencies compete for assets along the Border, and their proxy assassins prowl the night. At the center of events is the mythic figure of Captain Robert Nairac, the Special Forces operative who was to disappear while on active service in 1977, never to be found. Twenty-five years on and Blair Agnew, ex-Sergeant with a damaged past, looks back and tries to separate fact from fiction in a bid to lay his own ghosts to rest. But it is his teenage daughter who fully comprehends the deadly allure of the hidden.