Flatiron Books, a division of Macmillan, will publish The Secret Lives of Twin Peaks, an inside look into what has happened to the iconic characters of iconic fictional town since audiences last saw them more than two decades ago. The book promises to offer a deeper look into the central mystery of the original series, which ended abruptly, leaving many plot points unresolved. The book will come out late 2015, in advance of the 2016 Showtime revival.