Peter, Matthew, Thomas, John: who were these men and their fellow Apostles? What was their relationship to Jesus? Tom Bissell gives us rich answers to these ancient and surprisingly enigmatic questions in an unusual, erudite and fascinating book. By visiting holy sites around the world and examining how the Apostles' identities took shape over the course of two millennia, he explores the story of Christianity and its growth from an obscure Jewish sect to the global faith we know today.