Crossing the Threshold is the official history of the role played by the Marriage Equality organisation in leading the way for the successful passage of same-sex marriage in Ireland. Featuring contributions from lead campaigners, their personal perspectives will inspire anyone with an interest in campaigning for social justice, anyone who volunteered, marched or canvased, or who wished to know how the drive for marriage equality played out over the previous decade.

Leading figures, including Katherine Zappone, Ann Louise Gilligan, Gráinne Healy, Brian Sheehan and Niall Crowley, broach everything from fundraising and political strategic support to personal efforts and sacrifices, giving a full understanding of the multi-faceted undertaking of running a campaign that continues as a shining example of what it means to strive for a socially progressive Ireland. Crossing the Threshold is the swansong of all those involved — an insightful confirmation of everything that has been achieved. Hear the voices of the campaigners and examine the details of the strategies adopted that changed Irish hearts and minds to say Yes to equality in the Marriage Referendum 2015.