How do you define "Christian fiction"...
Poorly written, simplistic stuff like anything by Grace Livingston Hill?
Or stuff that delves into good and evil and God, such as works by Tolstoy, Sigrid Undset, Walker Percy, Edmund O'Connor, Flannery O'Connor, JRR Tolkien, etc.?
I am reading Flannery O'Connor's Wise Blood. I can not understand why I missed such a wonderful book. But how can one who was Catholic, Irish and Southern have been anything but a great author?