"Coming Out Christian in the Roman World", by Douglas Boin

Non-fiction, 1st Person "The supposed collapse of Roman civilization is still lamented more than 1,500 years later - and intertwined with this idea is the notion that a fledgling religion, Christianity, went from a persecuted fringe movement to an irresistible force that toppled the empire. The intolerant zeal of Christians, wrote Edward Gibbon, swept Rome's old gods away, and with them the structures that sustained Roman society. Not so, argues Douglas Boin." Produced by Audible Studios for Bloomsbury USA, 3/6/15 More info and reviews here