An in-depth biography of Bishop Thomas Gumbleton (b. 1930, Auxiliary of Detroit, retired), one of the most progressive and prophetic American Catholic bishops of the last fifty years. He is known in particular for his peace witness during the Vietnam War, and then role in crafting the bishops' pastoral on nuclear war, but he has been equally committed to global peace--in Central America, Haiti, Iraq; his advocacy for reform in the church, including victims of sex abuse, and ministry to the LGBTQ community. Though often controversial, he has always remained a faithful bishop, committed to speaking out and following his conscience from within the church and subject to authority. (Currently 92; just named Bishop-President Emeritus of Pax Christi USA.