The Life You Save May Be Your Own: An American Pilgrimage by Paul Elie.I've read the first chapter and I'm already impressed. This a quadruple biography of Dorothy Day, Thomas Merton, Flannery O'Connor, and Walker Percy. Their common thread is that they were all American Catholics of the mid-20th century who found their religious experience best through writing. I've read a little bit by each of these authors but never new they were friends who corresponded and read each others work and were nicknamed "The School of the Holy Ghost". Quite fascinating so far.