When minister and friend Derek Parker mentioned that he was in a study group, and that they were reading a book about people who were once devoted church members but have left the church without giving up what they believed … well, that piqued my interest. And it's a sociological study, not just an opinion piece.
I even ordered a copy. And you can also download a sample chapter at the link.
Church Refugees, by Josh Packard and Ashleigh Hope. (Group, 2015)
But I read slowly, so you'll have a change to catch up.