“To Kill a Mockingbird” novelist Harper Lee wrote yet another book that remains unpublished, a close friend said on Tuesday, adding to the mystery surrounding the reclusive writer on the day Lee’s “Go Set a Watchman” went on sale. The unpublished book is a crime story called “The Reverend” based on a true story involving a pastor who killed three people and was acquitted of murder, said Auburn University professor Wayne Flynt, who has known Lee for more than 30 years. Flynt told reporters, “I know it exists because (Lee’s) sister Louise told me.”
