Napa-based artist, author and Notre Dame de Namur University instructor Rick Deragon’s new book, ‘Fire in the Year of Four Emperors,’ may be a work of fiction, but its attention to detail and densely layered political intrigue is so spot-on that it makes the story—about four Roman generals vying for power in the year 69 A.D.—feel like it really happened. Published this summer, Fire in the Year’s vividly realized characters experience a sprawling scope of adventures that hooks the reader and sets the table for a larger saga. Deragon reads from Fire in the Year of Four Emperors on Friday, Sept. 22, at Napa Bookmine, 964 Pearl St., Napa. 6pm. Free. 707.733.3199.