1975: A young Irish-American man joins an elite US Marine unit to get the most intensive military training possible—then joins the Irish Republican Army, during the days of some of the bloodiest fighting ever in the Irish-British conflict.

In a powerful, brutally honest recounting of his experience, John Crawley details, first, the grueling challenges of his Marine Corps training, then how he put his hard-earned skills to use back in Ireland in service of the Provos. It is a story that will see him running guns with notorious American mobster—and secret IRA fundraiser—Whitey Bulger; running, under cover of night, from safe house to safe house in the Irish countryside, one step ahead of British troops; being captured, imprisoned, and being part of a mass escape attempt; fending off a recruitment offer from the CIA; and being one of the masterminds behind a campaign to take out London's electrical system.

Along the way, Crawley is blisteringly candid about the memorable people he worked with, including behind-the-scenes portrayals of revered IRA leader Martin McGuinness, and of the psychopathic Whitey Bulger, as well as others in the Boston IRA support network. There are vivid portraits of colleagues and enemies, and Crawley is unflinching in his commentary on IRA leadership and their tactics, both military and political.