Starting out as a minor player in the politics of Northern Ireland and the Republic of Ireland, Sinn Fein has now become a major political force in both political systems of the island. Despite recent allegations of complicity in sexual abuse, the party continues to rise in popularity. How did this transformation, from being a marginal party associated with the backwash of the troubles to becoming a mainstream force in southern politics, come about? This is the first comprehensive account of how Sinn Fein has, in one generation, succeeded in reversing its fortunes through long-term strategy, political opportunism and community activism. Leading political journalist Deaglan de Breadun has interviewed a wide range of contacts inside Sinn Fein and across the Irish political spectrum, including Gerry Adams, Martin McGuinness, Mary Lou McDonald, Pearse Doherty, Peadar Toibin, Martin Ferris, Dessie Ellis, Micheal Martin, and Michael McDowell, among many others. As well as elected politicians, critics and opponents, the book draws on interviews with officials and grassroots members, civil servants, the security forces and Irish America.Based on long experience of watching Sinn Fein and its supporters, Deaglan de Breadun unveils a fascinating and indispensable history.